On a Gen 3, I find the car much more fun to drive at around-town speeds with the 3.73 gears. Sounds better, too, because it is not bogged down at sub-2000 RPM all the time. With a Gen IV, the drive-by-wire throttle lag may make the car more touchy and jerky to drive with the lower gear ratio, but a 3.55 (as used on all Gen 5 Vipers) would only be marginally better (a 3.73 ratio is only 5% lower than a 3.55 ratio).
Isn't the 2008 model a bit worse than later model Gen IV cars as far as throttle lag is concerned?