True manual shifting is fun, and I love it on the GT since after all, it's the last great car without all the newfangled tech assist stuff.
But when I drive my wife's BMW M3 with paddles on the track it's truly awesome (except for downshifting being a tad too slow). I guarantee you that paddles will make you faster on the track, even though it's not as "fun" and you don't get the same raw driving feeling.
The M3's SMG gearbox is known to be excellent, and I vouch for that.
Regarding the Enzo, I thought it was an insane car, but now that I have my GT, I MUCH prefer the GT. Reasons:
- Enzo power curve is not as smooth
- Enzo gets super hot and loud inside. In fact, you don't want to push the Enzo because it'll kill your eardrums (nice Ferrari whine though)
- The inside of the Enzo is nowhere near as spacious or pretty as the GT
- Ultimately it's a matter of taste, but I think that the GT has a much more original look than the Enzo
- Enzo clearance is a disaster. Good thing it's got the button to raise it when driving less than 20mph, but that doesn't help when you get a bump in the road.
- And finally, you feel that there's too much electronics in it. The GT feels raw, coupled with all the frame metal showing.