I bought a straw one. They're kind of neat. But he still hates them all. I remember Krumply writing something about her older daughter doing better with straws? If I'm not mistaken. I have 2 of the Nuby kinds, 1 Dr. Brown's, which is more traditional but with a slower flow. And one with the straw. I have used the straw the least. I should try it more. Of the others, he seems to do best for me with the Dr. Browns, but really, he'll only take a sip before throwing it; crying; screaming; etc.