Even amongst generic toners, sometimes you do get what you pay for
357224
Works flawlessly...unlike the other and cheaper generic Canon laser toner refill that I also ordered off of Amazon, which wouldn't print and made an awful whirring/clacking sound.  Will stick to this vendor's refills from now on.
752028
I have a low volume Canon laser, the first 100 or so prints, which took me about 6 weeks to get to were fine.  Then after that, there started to be fine light grey lines on the print outs, at first like watermarks, then slowly they got darker, to now I am replacing the toner. I think I will stick with Canon branded, since every time I have tried the generic, it has either caused poor prints (the most common problem) to gumming up the actual printer (an inkjet, right after a generic was used it gummed up the print hear.  had to take it apart to soak in rubbing alcohol)
4297352
I am on my 3rd or 4th generic toner and have gotten about 1200 pages from each toner. The moment I put it in it said "HP toner installed" or something like that verifying that it recognized it as an OEM. The OEM toners are crazy expensive. At roughly $18 for the generic that works out to less than .015 cents per page cannot beat that!
991983
I've had spotty results with generic cartridges. Some caused smearing, others worked well.  Brother cartridges always work as expected.
2385460
The cost savings over OEM HP toner cartridges is significant, but you do work for your money.  And what a mess. When dumping out the old toner, the toner powder gets all over the cartridges in every nook and cranny.  I would have liked to vacuum but was worried that the fine powder would go right through the vacuum filter.

A hugely important note: the reset chips are color matched to the specific cartridge color. If you put the wrong chip in the wrong cartridge, you will get an "incorrect magenta" (or other color) message.  The supplied directions do not state this.  I called the supplier (Lasertekservices) and the gentleman happened to mention this fact.  I looked closely on the little static free bags and noticed they were marked with a color i.e. magenta in very fine print.  I was fortunate that the chips also had the color letter etched on the chip.  Once I rearranged them, the printer worked.

The prints after only 10 pages are streaky.  I have run the printer through several cleaning cycles but it doesn't seem to help much.  After I run many more pages through I will report back.

EDIT: Probably now at several hundred pages and I would classify print quality as average.  Nothing like the original cartridges, particularly with photos, but good enough for general printing of non essential documents with text.  Not sure I would do this again.
2529285
I really like the cheap price on these cartridges, but print quality has been hit and miss.  I occasionally get a thin strip of color down the left side of printed sheets for no apparent reason.  Sometimes it's there, sometimes it isn't.  If your printed items need to be high quality and professional looking, these probably aren't for you.  They're good for me, because as a translator my print volume is very high, so they'll save me a ton of money.  However, if I ever have to produce anything in print to share with a customer, I'll have to switch to the genuine HP cartridges to get better results.
3376150
We go through a lot of toner cartridges and we've found that buying the Brother brand cartridges not only give you more prints but more prints than the number of pages it states it should give you.  The generic brands have not lasted as long and have given us far less than the stated number of pages.  We did have a problem with a cartridge once that cause the printer to malfunction - we just got a bad cartridge I suppose.  But if something goes wrong, the Brother customer service is really helpful when it is a Brother cartridge that caused the problem and will send you out a new cartridge right away.  It is a bit of a hassle as you would expect that the first one would work for such a high priced item but I guess this can happen with any product you buy.  I do recommend this cartridge over the generic brands if you print high volume since it is worth it for the price per page since you will get more pages per cartridge than stated.
3705617
They work great for the printer and are best for cost.  When the toner starts to run low sometimes the quality isn't as good, so if you have a proposal that you want to look best, make sure you have decently filled cartridges and make sure to calibrate.  I think that is expected with refurbished toner cartridges.  As the saying goes, you get what you pay for, but you do get decent cartridges from here.  I purchase about 1-2 times a month from them over the last year, haven't had one break so it must be rare.
4524688
Like others stated supplied toner will not last long (which is expected, plethora of generic toner is available out there). Wifi connectivity is a temporary problem since the printer doesn't wake up unless you hold the WPS button 15 seconds. Do this only one time and the problem disappears instantly and you can print wireless trouble free. I don't know why Samsung let users to figure this out rather than shipping the printer with this feature enabled is hard to understand, but hey no one can complain with this printer for what it does for the price.
1159692
I got these awhile ago and have used them all the way through but I must say I'm not impressed with the quality of the printing.  I also had a lot of the toner actually wipe off the paper. I'll be buying the high yield tn450 from brother from this point forward. I know they are more expensive, but you get what you pay for.
1889788
Overall good; I did have one toner that printed lines on the pages that I probably should have sent back.
3891232
These work fine enough, at least at first. It wasn't until I was couldn't figure out WHY my labels were blurry and the ink rubbing off so easily, that I remembered I had switched to knock-off toner for my laser rpinter. I regret everything. I just subscribed to&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Brother-TN450-High-Yield-Black-Toner-Retail-Packaging/dp/B003YFHCKY/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Brother TN450  High Yield Black Toner - Retail Packaging</a>&nbsp;and I won't try a cheapo alternative again.
267219
The cartridge pops right in, working fine without a fuss.  This toner seems a little "grainier" than the original starter cartridge, but good enough for my purposes.  Text and thin straight lines look a little dithered and grainy.  I felt this was a good deal for the price, and I'd buy it again.
(But before I buy another, I'm going to explore refilling the cartridge, I think that's even cheaper, and less plastic waste..)
---
Update: Very disappointing.  It was a short honeymoon after all..  After about 300 pages, it started blobbing toner across both sides the page, especially at the leading edge of the page.  At first I thought there were hair fibers mixed in with the toner and sticking to the page; but no, it's temporarily-melted toner blobs being yanked across the page and re-hardening in hairlike filaments stuck to the page like melted/spun sugar.  Opened up and cleaned piles of wasted toner out of printer's innards and in the drum housing/gears (ugh.)  The cartridge is just spilling toner out of the cartridge way too aggressively.  When I switch back to a different toner cartridge, the problem disappears.  After several cycles of cleaning/re-shaking/testing, it's consistently bad.
I'm desperate to print, so I caved in and switched to a Brother cartridge instead, grr.....
3481989
What can anyone say about toner? It works, there have been other brands that I have had to return as the quailty was very poor.
2877117
I purchased this toner for my HP Laserjet Pro M477 after the included HP name-brand toner was exhausted.

PROS: This compatible toner is MUCH cheaper than HP name brand.  Also, the print capacity of this toner is much greater - I'm already easily double the number of pages printed and I still have 50-60% capacity left. These two things are the saving grace for this product.

CONS: The print quality has frankly been very disappointing.  The name-brand HP printed vibrant colors with nice, even tones.  These cartridges have noticeable and distracting color streaks and bars.  The colors on my prints  appear washed out and weak. Overall, the print quality with these is barely acceptable! Other reviewers said they could tell no difference between the compatibles and HP originals, but that has not been my experience.  I will probably take a chance and purchase these again, and I will update this review based on my experience.

UPDATE 6/18/2017: INK E-SALE sent me a new set of toner. The print quality is quite close to the original HP toner. Updating this review from 3 to 5 stars accordingly - with larger capacity, much lower price, AND very good print quality there is no reason not to.  The new toner arrived in an Ink E-Sale box with good packaging.  Each toner cartridge was enclosed in its own plastic bag. This time a desiccant package had been added to each bag to absorb any humidity (see pic). Also another protective paper tab was added to help protect each toner cartridge.  (This is in addition to the standard tape tab that you pull out.)
2390797
The toner does not last long enough, considering the cost of the cartridge.
679185
I can only speak of the price at this time. It was over 60% lower than the nearest price for toner compatible with my printer. I still have roughly 50% of the original toner left so it's going to be a while before I get into this. It's not going to go bad so I figured I'd order one at a price I'm not likely to see again.