I hadn't driven a v-drive in years (probably 30) until I had a chance to buy my Sanger mini cruiser/casale/turbo400 last fall. Since my son has the same hull with a berkeley jet (but with more HP), I've been able to make some real comparisons. The steering feels very different and the v-drive turns very well (sharp) to the left (port), but takes a w i d e arc when turning right (starboard). Although I have reverse with the turbo 400, there is very little turning ability. The jet has a better hole shot, but the v-drive planes faster (1800 rpms), and is more responsive between 2500 and 4000 rpms. The v-drive is noiser (v-drive and trans sounds) and seems to ride lower in the water to about 4000 rpms, when it really loosens up and feels like it wants to take off. My guess is that top speeds are comparable even with the HP differences (400 vs 550). At cruising speed--35-40 mph--the v-drive is turning under 3000 rpms where the jet is at 3500+. I love being able to cruise the 5mph zone in first gear and in a straight line, and the fuel economy seems to be 50%-75% better in the v-drive. On the other hand, I still worry about all the $$$ hanging under the boat.
All that said, I'm having a blast with the v-drive, and I think with a little work--more HP--it has more potential performance than the jet. You know, Dad always needs to win.