Pros: Reusable, made from bamboo, pretty little cases
Cons: Chopsticks slip out sometimes
I got one of these To-Go Ware sets last year at the SF Green Festival. At that point, they only had the WEAVE sets available, so that's the kind I have. I'm a fan, for sure. I really like using bamboo utensils over plastic (and while biodegradable stuff is handy sometimes...you don't have to worry about your spoon melting or curling when you stick it in your hot coffee). The cases for the utensils are also quite beautiful and I appreciate the socially conscious aspect of them (i.e. sourcing the WEAVE cases from a women's cooperative in Burma). And it's a bonus that you get chopsticks too.
Now, just a little hint for those of you with a WEAVE case...I'd recommend double knotting the tie. If you just loosely single knot it, your utensils are prone to slipping out (and the tie is thick enough that there's very little worry of double-knotting and not being able to untie it again). Oh, and the only other drawback is that the bowl of the spoon isn't very deep so it doesn't make the best soup spoon. But on the whole, I would definitely recommend them.