i've had some fun in 500+ vehicles... but wouldn't want it to be my daily driver in most cases...
it all depends. these days over 5 hundred isn't much to some manufacturers and they can make it smooth and easy to drive.
takes away all the fun! to me, it's not whether i win a race, it's the feeling i get when driving. my morgan rates at 70hp i believe... and i have more fun pushing it around than i ever have in challengers, vipers, porsches, etc.
i'd prefer to push something to it's limits at 120kph than to comfortably cruise at 200kph and know i've left a lot on the table.