You will go a long time trying to find something that flies nicer than a Chipmunk, its my personal favourite.
Vans RVs are nice, 400 and 500 series Cessnas are beautiful on the controls too. Someone mentioned Kingairs.
I personally like the feel of the (much) older SE Cessnas and Pipers too, maybe it was because they were generally lighter?
Another interesting list might be planes people don't enjoy flying..