Holly never really took to stand alone potties, and we've been using potty rings--a Bjorn one, and a First Years one, both of which I got at consignment sales. The Bjorn one is great--I have no complaints about it. But the First Years one, though it has worked fine, has to be taken apart and cleaned ALL the time, because pee will get between the two parts of it. If you don't clean it, it dries inside and is just gross. Ugh.
So I bought this "real" toilet seat last week, and have been SO happy with it so far! I really wish I would have gone straight to this from the get go. I love not having to worry about where to keep the ring when not in use, and pee getting everywhere. When not in use, it just folds away into the lid.
Just thought I'd share!