K.F.
I love the Playtex one I have - my daughter learned how to use a straw before she could use a traditional sippy because she couldn't lift it up to drink out of it, but she could suck the liquid out of a straw....so I just had to buy the straw sippy - it was so awesome. The Playtex one is not hard to suck out of and it is spill-proof - there is also a gripper one that makes it easier for them to hold. I have the harder plastic kind with a pretty design. The valve can be removed and cleaned and it's very easy. Hope this helps. Good luck!!