Upgrade from the old plastic
936689
Upgraded the kitchen to stainless appliances, and so decided the pet water fountain should be the same. This not only looks great, but holds lots of water effectively. The funny thing is it makes a gurgling sound when the water flows, but doesn't seem to bother the dog or cat!!
3484849
We had those cheap plastic one. What an improvement. Great quality and always a fast ship with PRIME.
2291566
This is a way better alternative to the plastic versions.
4781354
I originally got one from Home Depot but when it arrived it was plastic.  This is a really thin metal but at least it doesn't feel like the chrome can be scrubbed off.  This isn't heavy duty feeling but it is an improvement over my 50 year old one.

My only gripe is the screws were too big to fit my existing holes probably by one size and thus I need to go get new screws to fit.  Hopefully I can find them with heads to match the plate.
1683510
Valley Forge Quality
Well Made
Metal Replacement for a Plastic One
4509148
I had one of these that snapped after years (5 years? I don't know). I think it looks nicer and is less noticable than the big plastic versions. Simple & clean.
3125715
Sooooo much better than the plastic ones, it does not stick to itself like plastic.
563088
Much quicker than the older model, well worth the upgrade.
2658771
I've used it a few times already and it is much better than the smaller, plastic one that cost about the same amount of money that I had been using.
297981
I agree with another reviewer who said this is a big improvement over the prior model.  In fact, I had about 4 of them, and tossed the old ones out to replace with the new model.  The improvements are that 1) the glass bottle screws directly into the feeding station.  In the prior version, it screwed into a white disc which snapped into the feeding station.  Snapping a plastic disk into a plastic feeding station caused the disc to wear out over time, so that the disc and feeding station eventually fell off.  Also, knowing that snapping the disk in and out caused it to wear out made me not want to remove it after each use, so as to clean the feeding station.  2) the glass bottle has a wider opening so that you can actually clean it with a bottle brush!  I bought 5 of these and none of them have leaked, as some people have reported. If you haven't actually SEEN it leak, you might consider that sometimes bigger birds land on the feeders and make it swing... and that causes the "juice" to end up dripping.
82721
I had switched from plastic to glass, and now back to plastic, for the simple fact that plastic is lighter and (to me) seems easier to clean. These are well built, the lids close tight and I've never had to worry about leaks. Would buy again.
1105123
After trying dozens of other reusable bottles my wife and I tried out the Camelbak "Better Bottle" (750 ml) and fell in love with it about three years ago.  We use them everyday, at work, the gym and everywhere in between.  After considerable abuse the spout caps broke and the spout connectors had come unhinged so we needed new bottles.  We were a bit hesitant but liked the way the design looked for the new Camelbak "Eddy" (750 ml).  Verdict:  The Eddy is better than the Better bottle.

Pros:

 - Spout cap is now fully covered and integrated as part of the removable rubber bite valve cover which protects it from being damaged.  Great idea to protect the integrity of the spout and it also works to protect things the bottle may knock into.  The Better Bottle's cap end, which you use to flip the spout open was exposed and made of hard plastic...needless to say the thing was just begging to be chipped or broken with every drop or fumble.  Great upgrade!
- Bottle tops are a little more sleek-looking and the plastic seems to be a bit softer and more supple.  Again, a bonus for when (not if) you drop this thing.  You likely will not damage it, but when it is full it is pretty hefty.  Softer plastic may save it from damaging whatever it hits.
- The plastic straw is bigger, meaning it is wider and can draw more fluid in.  Much needed upgrade.  My biggest complaint with the Better Bottle was that you would have to work a little too hard to draw fluid up, especially during workouts when you are really thirsty and want water fast.  The bigger straw is a big bonus.
- Bottle top seems to be a better (tighter) fit.  We had some issues with the Better Bottles leaking when not screwed on SUPER tight.  That may have been from washing and use, but the tops on the Eddy seem to be a easier and tighter fit.
- Camelbak guarantees the product for life.  I doubt I will have to test their policy out, but that should make you feel confident in this purchase.

Cons:

- The bottle top for the Eddy, like the Better Bottle, has little nooks and crannies where mold will grow if you don't wash religiously.  It will also grow in the straw pretty easily.  You just can't stick it in the dishwasher and guarantee that you get it all clean. You pretty much have to use a small brush to get in there and get the mold out.  I recommend getting the cheapest brushes you can find, not the overpriced Camelbak kit (we actually use our daughter's baby bottle brushes).  Also, the Camelbak cleaning tabs, while super convenient, are also a waste of money.  Just get a big generic bottle of distilled white vinegar, mix it at a three-to-one parts ratio of water to vinegar and use that solution to sanitize it and clean out the mold.  We try to soak the bottle in the solution once a month or so for a few hours, brush clean all the parts with the solution, and then drop it all in the dishwasher to get the solution (and its horrible taste and smell) off.  We just drop them in the dishwasher once a week for routine maintenance without using the solution for a quick clean.
- The Eddy on Amazon is a bit overpriced.  We bought our first two Eddy bottles at $15 a pop with free Prime shipping.  Not bad, but we found a better deal with free shipping (not two day, but close) online and got three more Eddy bottles for $12 a pop.
- Amazon is listing the 750ml Eddy as a "Kid's" bottle...its not the Kid-sized version.  Also, many of the pictures don't match up with the actual product you are getting on Amazon's site.  Just do a little research and you should be fine.

That's it.  Great product for you and the environment.  Probably the best $15 you will ever spend as it will probably pay for itself in month or two.
3600736
Great replacement for a plastic one that I owned for many, many years. I'm happy to have a grown up version.
3851930
Quality product over the plastic version of the same.
591609
Better than the plastic rack adjuster that the renters broke!  Installation nearly chopped a finger off but I was having a clumsy moment.  Highly recommend looking at an installed stop before putting one on.  I really have no idea what one does to break the plastic rack adjuster but this one is so much nicer than the original that it's well worth the upgrade once one is broken.  The instructions are clear although it's not as simple as you wish it could be.  This kit included the screw adapter so the torx or whatever that odd screw is they use isn't an issue that you don't have it.
1576621
I got ripped off buying the plastic ones from another seller. They were NOT like the plastic ones sold years ago; they were chintzy, and all of them quickly broke. I should have just bought these metal ones to begin with. They cost more, but they're sturdy and will probably last for years. They are definitely worth the extra investment.
3743898
The new design is much better then the old, which had a tendency to crack and leak a grease'like substance into the blender jar (EWW!).  The newer design is more robust and I have confidence I won't have to deal with the cracking issue of the old one it replaced.  Fits perfectly and came with a gasket.