I'd say that to be able to rate the best first bipe, a guy has to have flown several of them first. AFAIK, the Goldberg .60 sized Ultimate is very hard to beat for how easy it is to operate and as aerobatic as any in it's size range.
A good "profile" would also be a great choice it seems, though I have none I could personally recommend. Hard to go wrong with the high power / low wing loading combos.