C.H.
We went with Safety First One Step Trainer Seat (it latches on to the toliet seat and lifts up when not in use) and both my kids loved it. The thing I liked so much about it is that we didn't have to make another transition from potty chair to toilet and there was no need to have clean out the potty chair. All we did was flush and in fact, they loved to flush the toilet that that in itself was a reward for going. The bad thing is that from what found, you can now only buy it on line (Amazon.com).
http://www.google.com/products/catalog?hl=en&q=safety...