D.W.
I like the playtex cups. They do not leak as easy and they have a hard tip from which to drink from. All the nubby cups have a soft tip and the kids like to chew on them. They leak and I do not like them. The only issue is that they have valves and they do need to be taken out and cleaned or they will get mildew in them. They do sell replacement valves. I think the cups overall are good. You can find them in target or walmart and often times they are offered in a two pack and it is a little cheaper. They also show the recommended ages for the different cups that they sell. Good luck