I'm really impressed with this. I have got it as my little one's first weaning cup, and she's already figured out how to use it after just 1 week. You can tip it upside down and it doesn't leak. The little handles are good, but as yet I haven't found a way of securing them so they don't spin around the bottle. I also like the idea you can attach the handles to the TT bottles (genius!), which we use for travelling.
Unlike other reviewers I have not had a problem with it being too hard to suck from, perhaps the valve isn't quite right in some of them (?)