I'm gonna go the other way Rick. 240s are very cool and there's no wrong answer, but I think the late 944s handle just a bit better IMHO. I was out at Laguna Seca a week ago and both were on the track. Off camber turn and you could see the 944 carry more speed and keep the outside tire flatter. Could've been the difference between the two car's set ups, could've been the platform...who knows...but I liked it better.
Cool factor? That's a toss up. They're both awesome!
I've thought about this:
http://www.renegadehybrids.com/
(click on the 944 link at the top)
...but the People's Republic would never let me register it!
I hope you do this buddy
P.S. I prefer the later model 944s personally.