The cup works ok for coffee as long as it ...
925434
The cup works ok for coffee as long as it doesn't sit in it too long. Coffee or tea pick up flavor of the wood if they are in it too long. Hours.
4295829
It works but not the best design, just after 4 K-Cups the needle that punctures the top of the cup supplying the water got clogged with coffee grounds requiring me to take a toothpick and poke the three holes in the needle to open up the clog. Also the K-Cup does not drain completely leaving you to find some coffee spatters on the floor when you toss the cup.
502194
It makes coffee okay. Sometimes the coffee has a plastic taste to it even when you don't use the cup it came with.
3094251
I don't drink very much coffee - one cup most (but not all) days.  So hand grinding while, yes, a little labor-intensive, works fine for me.  Plus this works well with my Aeropress.

One day while grinding for a cup at work, I heard a crack and grinding stopped.  Investigation proved it was a plastic piece that cracked.  There appears to be no replacement for this little piece available, rendering the entire thing useless.  So it worked great until then, but I don't think three and a half months is a reasonable product life.  (An email to the company produced no response.)
407720
Also, it's a good coffee cup in terms of size and functionality if you set the top asside.
3112929
Good for caffeine fix but only ok quality coffee
1840664
It works!  NOTE:  This is for the carafe-size brew, not individuals cups
3762108
Well, the coffee tastes good, with a smooth flavor that would be good to drink all day long, but the cups let coffee grounds through. I won't be buying more and will stick to buying my k-cups elsewhere.
528689
This handy little cup is just ok.  The coffee is pretty week on any setting.  I wouldn't buy it again
4625825
The cup absorbs the soapy chemicals of the dishwasher, so I have to just soak it in water. Also, the cap doesn't clearly 'click' when fitting it on, and today it popped off and hot coffee went all over the car.
728054
It is generally okay, except:
1. The opening for the water filter is oval (should be round), this causes the filter to fold in. i have learned to check and if it is folded in I have to pour the coffee thru the filter one more time. I only brew one mug at a time so that works. But it is a major design flaw.
2. The carafe has a design flaw that prevents it from completely emptying out.
Other than that it is fine. But issue #1 is driving me nuts and have cause me to get caffeine withdrawal symptoms many times when I forgot to check the filter...
4030863
These are advertised as a Keurig replacement coffee filter. They are a little too large for the cup. They work, but the cover is hard to close and doesn't always seal leaving sediment in the coffee cup.
3232272
Not good with hot beverages. the cup does not seem to work well with hot liquids.
4233758
Works OK. The hole in the bottom seems like it is too large and the water flows through too quickly, resulting in bland coffee. You either have to put more grounds than you would normally use in it or, what I do, and stick your finger under neath it to plug the hole and let it sit for a minute or two with water in it. I use it at work since I don't have a coffee maker there, so the portability is nice.
150269
The appearance of the cup is very nice; however, every time you sip, coffee runs down the outside of the cup.  Additionally, the cup is not level.  The contents tilt to the side.
385334
It's okay, it's $14 so I can't complain too much. It has a hard time blending ice and I did follow advice and put liquid in first. When you do hold the button and blend for longer than just pulses it does get a faint burn smell. The cup is durable and other then it having trouble with ice, it works okay for the price.
1518568
It is a nice cup, unfortunately I broke it quite quickly (I dropped a cooking pot on it) but it was a nice cup, it doesn't keep beverages long for a terribly long time for its size (I think it's a giant cup which takes me a long time to finish the drink out of and so should keep drinks hot a really long time) but for not being sealed around the top it does well. I would get this product again but in a smaller size.