My 3 1/2 year old is pretty much potty trained. However, we LOVE the Pourty Potty still for trips to grandma's house when we have stay in a hotel and I don't want my son going anywhere near a hotel potty! He actually has been begging me to use his Pourty (although he uses the regular toilet normally) but I keep having to explain that it's for grandma's!
Prior to this we had a Baby Bjorn starting when our son was 2, pretty much the same size as the Pourty. However, the Pourty beats the competitor when it's time to pour and also the higher splash guard. It doesn't have all the bells and whistles of more expensive products, and really, the Pourty is all you need and it's very portable for trips and such.
Some reviewers have said that the Pourty is too small. Well, it is smallish, but it works plenty well for my very tall 3 1/2 year old boy. He may look huge sitting on it, but as toddlers get older they know when they need to go so it's quick anyway. He seems...