I don't like sippy cups much. With baby #1 we tried a normal one and a valve one. The ordinary one could be shaken upside down to tip the drink out, while the valve one was impossible to clean properly as there was a bit you couldn't get to. With baby #2 we didn't bother with a sippy cup at all. We just went straight to a plastic tumbler, which we'll help her with until she can manage it alone. Because we only put water in them, it doesn't matter greatly if a little bit gets spilt.