I have an Outcast Fishcat pontoon (
http://www.outcastboats.com/outcast/...ult.aspx?id=26 ) and it's pretty good. I can't compare to other pontoons, because this is the only one I own. It does have a motor mount and I've used it with an electric motor once, but I found it difficult to troll (preferred flippers).
Outcast quality is pretty good and their customer service is excellent. One of the bladders in my float tube (not the pontoon) had a slow leak in it, so I called them up and they sent a replacement right away. Awesome service!