Grinds well and easily, though
587463
The only things that aren't plastic are the mill mechanism, the crank, and the glass cup at the bottom. Grinds well and easily, though.
2225417
I like this grinder, but but have some qualms with it. First I will mention what I like about it:

Finish:
I really like the finish; the top print is beautiful, and the grey finish throughout is very nice and it arrived with no scratches.
The middle and bottom chambers have a large capacity for a grinder of this size, which is related to one of the "cons" below. The design on the top is in the form of a decal (expected at this price level).

Action / Use:

Action on this grinder is excellent! Unlike some other grinders the machining provides sufficient clearance that it doesn't need a nylon bushing to maintain clearance between the teeth; in fact it doesn't even come with a bushing/washer!  It glides very smoothly, and it shreds herbs very well. There is some fine knurling on both the top and bottom chambers to assist with grip, which is a nice touch, and the magnet holds the lid on surprisingly well.  It does a great job grinding the herb, although there is a flaw... see below.

The threads engage smoothly with no problems, with no tendency to cross-thread, nor is there any feeling of "galling" that you encounter with poorly-machined threads. The case is slightly taller than some other same-diameter 4-piece grinders, but it is not heavier and it has a larger capacity so that's a win.

Cons:

First, the holes in the top chamber between the grinding chamber and the herb chamber could stand to be a little smaller. I had ordered this particular grinder for its greater number of teeth, thinking it would work as a finishing grinder.  It does grind very well, but the holes between the grinding and middle chamber could stand to be smaller; to grind herb really fine you need to turn the grinder upside down to keep the herb from falling into the chamber, and grind away with the grinder upside down. It does work well but it is a minor annoyance; I had expected that with a large number of grinding teeth that the holes would be a bit smaller to retain the herb until it is finely ground. This does bother me but the workaround is something I'm used to with other grinders (including space case), so it's no big deal. I would like to see them address this though, and I feel compelled to dock a star over this oversight between this and the too-fine screen issue. :(

Pollen screen: the screen on this grinder is far too fine. Of course I put a nickle in the herb chamber to help shake pollen through the screen, but it could stand to be a bit more coarse. I forsee having to clean the screen more often than I would have to with other grinders.

Lastly, and this is related to the large capacity; the metal is a much thinner gauge than you might expect. This does not negatively impact its function in any way, but when you pick it up and open it, it "sounds" cheap, not entirely unlike sounds you hear from a cheap early 1980s econobox.  This does lend to a larger capacity in both the pollen and herb chambers, so it's simultaneously an advantage as well, but if a superficial cheap "feel" matters to you, you might find this bothersome. I find the light weight and increased capacity to be advantages which outweigh a superficial quibble. I'm not docking any stars for this one as this is a purely subjective issue and frankly it doesn't bother me but I felt it worth mentioning to help those who do care about that sort of thing.

Conclusion:

It grinds well, which is what is important, and can be used as a finishing grinder if you hold it upside down to grind the herb longer, and is very good for the price.  The holes between the grinder and herb chamber could stand to be made smaller, and the pollen screen could stand to be more coarse, but for the price... it's quite good. I would not hesitate to buy another if I needed another one.
3907325
It's a sharp, consistent grind from the mechanism.  The grinder is easy to fill as well. Being Acrylic, it doesn't have a particularly elegant "feel" or weight to it - but I expected that.
2728845
This unit grinds very well, and is easy to assemble and adjust.  The slip-friction fit between the grind head and collection chamber is a little loose, and care has to be taken to keep those two sections together while gripping and grinding. This is the most quiet of the three hand mills I own but also the slowest.  It takes me about 2 minutes (2 cranks per second) to grind 18 grams of coffee at what I would call a medium grind compared to about half that with my other two hand cranks (Hario,Red-Rooster).  The JavaPresse wins out though in portability as there is nothing to break during transport in a brief case or back pack.
1883026
This grinder works well.  I grind beans for use in my coffee maker, and I find that the medium to course grind works the best.  The grounds appear to be very consistent and the coffee tastes full of flavor.

The Grindz cleaner is a bit gimmicky as you would go through a lot of expense if you used these Grindz beans frequently.  The small brush that comes with the grinder works well to brush out the grounds from the tight spaces below the burr outer ring once removed, and a good tap of the sides of the grinder upside down over the sink every morning after grinding leaves it clean and ready to grind the following morning.

I have not experienced any issues with static in the plastic ground beans container.  I have used oily Starbucks beans and home-roasted City roast beans, and both have ground consistently well in this grinder.

4 stars because proper cleaning is somewhat involved, and a Tablespoon of grounds never makes it into the ground beans container.  I take it apart after grinding and brush the grounds into the hole that drops into the ground beans container to reduce waste.  Compared to a blade grinder, there is a lot more clean up, but the taste benefits of a burr grinder make up for it.
3698999
Grinds well, by that I mean you can get it pretty fine. No idea how long it will last but Oxo is a good manufacturer
4632500
I use the coffee grinder every day.  The ceramic burrs do a good job of grinding coffee beans and seem to be going strong.  My biggest peeves are the things that others have also mentioned:  the width is just wide enough to be awkward so I can't grasp it for too long (I have average-large women's hands).  Fortunately, it only takes a few minutes for me to grind but still, I notice it.  It seems like such a simple thing to fix and would make it so much more pleasant to use.  The other peeve: after a few uses, the screw that adjusts the size of the grind seems to loosen - which I notice when the grinds are larger than expected.  I have to remember to check it each time to ensure the right size grind.  Other than these 2 things, I do like this grinder, and while I'm tempted to buy an electric one out of sheer laziness, I haven't gotten around to it yet (so maybe it's not that tempting after all!).
2183430
I like this grinder. The resulting grind is quite uniform and you can easily hold it with one hand as you grind with the other.  You have to be willing (I'm happy to) use some "elbow grease" to spend a few minutes grinding manually.

Wish there were
(1) a more obvious way to set the grind (you have to turn the little nut at the bottom of the grinding handle one way or the other - I always forget which way for a finer/coarser grind and have to experiment. But one click changes the grind.)
(2) the handle folded down rather than coming off
(3) the neck had a slightly larger diameter. You can't get a tablespoon into the jar.
397729
This functions exactly as described.  This type of "burr" coffee grinder was recommended by a specialty coffee company over the blender blade style most popular coffee "grinders" are;  electric burr type grinders with decent ratings and such seem to go $80 and up (mostly up), and we usually buy ground coffee so I thought I'd get this.  It works fine, but as some other reviewers have noted, it does take some work and it's hard to hold the thing dead steady while turning the handle.  If you are very small or weak, you may have issues, but most people will not, and some wiggling of the unit as you turn is not a significant issue.  UPDATE: I have only run a few varieties of coffee through this grinder, it's working fine, but it seems like darker roast beans are much much easier to grind while lighter roast ones are more difficult.  Maybe they will come out with one that is built into an exercise cycle, improve your health and grind a lot of beans very easily!

If you get only whole bean coffees and have to grind a lot of it, this is probably not a good choice unless you are trying to punish yourself, but for occasional use, or in a power failure, or (as another reviewer noted) on a boat, or camping, etc., it's great.  It is well built.

The instructions are okay but note that the adjustment (fine to coarse) is effected by holding the shaft steady (by hand or with the "key", etc.) and turning the notched wheel, not just by placing the key in a different slot.  Trial and error.  One you get it set the way you wish, it works fine.
4440403
I got this + a tall pepper grinder and am in love with both. They do tend to "leak" a little bit, but I think this is pretty standard of this style of grinder. I just keep them on a small tray in the kitchen which is easy to clean every so often.

I'm particularly surprised by how finely the salt grinder is able to grind. You can adjust it to grind to a super fine powder, which is actually a bit too fine for most purposes, but having that range of options is really nice. Unfortunately, the grind is set by turning tightening the cap screw, which can slip a little bit after grinding, so you may need to readjust occasionally. I think this is a consequence of needing to keep the assembly simple in order for these to be (relatively) cheap, and so it doesn't really bother me much. They look very fancy and grind well, so these two issues aren't really enough to sour me on the grinders as a whole.
673019
This grinder is a great option if you don't have $300 to spend on a high quality automatic adjustable grinder.

This grinder is of good quality and easy to use.  The only downside is that adjusting grind settings is annoying because you have to take the top of the grinder apart and fiddle with the settings.  There are no grind settings that say "coarse" or "fine" so it is very much a trial and error processing where you adjust a specific bolt turning it either left or right until you find the settings for you.  It's not very practical to think you are going to change the grind settings on a daily basis.  I like hot and cold-brewed coffee and I find I do phases where I do one or the other for a period of time but not both since I don't have time to adjust the grind settings frequently.

Grinding the beans can be a pain, though the coarser you grind the easier it is.

As others have noted for this grinder, the coarse grind is not very consistent.
3138704
Summary: Simple + reasonably priced+ good at what it does + sturdy.

If you want the perfect grind, you'll have to work for it or pay for it.  For those complaining that it's work to grind, I wonder what you expected from a "hand grinder?"
The price is excellent compared to electric models, but I suspect that a product like this could be sold for cheaper.  I'm guessing that the demand isn't high enough for large enough scale importing to make it really inexpensive.
It is a very easily noticeable step up from the cheap electric blade-grinder I was using - you don't have to be a coffee snob to tell the difference.  But you do have to be willing to spend 2-3 minutes grinding your coffee.  This thing makes perfect ground coffee of any size and it is fairly straightforward to adjust for different grinds.  There are no marks for different settings, so if you are switching between grind sizes a lot, you may want to use a sharpie to mark your favorite settings.
Some of the negative reviews complained about the amount of plastic used.  There is a fair bit, but none of the working components (e.g. no part of the grind mechanism itself) are plastic.  The parts that are plastic seem very sturdy.
4799869
Grinds very well, uniform grind.  One star off due to mess (need to clean counter and ground container after each use)
3660169
This is a nice grinder. It does what it's supposed to -- grinds coffee. It is the first one I've ever bought, so I don't have much to compare it to, but I like that it's adjustable, so I can do pour overs or French press, or whatever else I want to do.

I only have two small complaints. First, there are no markings on the adjustment wheel, so every time I change it, I have to grind a little to see if it's at the right setting. Secondly, the top is narrow, with the post right in the middle, making it hard to get beans in quickly. If I'm not careful, I end up spilling coffee beans onto the floor.

Despite those two minor inconveniences, I enjoy using this grinder every morning.
1596477
It is easyto grind; it is easy to adjust coarse level; it is to refill and it is easy to clean.
4623003
Grinder works well, very easy to fill and use.  Grind settings are pretty accurate. I just wish the sticker on the barrel came off a little easier - it's got that "permanent" kind of glue on it.  I don't want to use a solvent because it may mar the clear plastic.
79925
I purchased this last month to use as a spice grinder and have been very happy with it so far.  It makes quick work of spices, and did a terrific job grinding pearl tapioca into powder.  I've also repeatedly used it to grind small amounts of oats into oat flour.  The top comes off easily, and is easy to wash.  The main grinder part is about what you would expect on cleanup - it's not difficult, but takes a bit of fiddling to fully wipe off the central shaft and blades.  The cord wrap is a little stiff, but I suspect that it'll loosen up with use.