the first gen does indeed have more grunt and pull in the low end. A potential problem with the 2nd gen occurs when the front rods bust. This happens though for those svs used heavily for track/racing. A common replacement is to actually use the 1st gen front rods or slap on some carillos. The only other thing you can do is to keep the oil level on the high side at all times, if you don’t feel like undertaking rod replacement. So keep this in mind if you’re buying used and the bike was used primarily for track/racing.