John,
My boat came with a bunch of 2nd Generations and 2 sets of 1st Gens. I sailed with the 2nds for a few years before I even tried the 1st gens. Being used to the 2nds, I hated the 1sts. They seemed to cavitate too easily. I did on GT with the 1st and went back to the 2nds. Would like to switch to the 3rds but now that you need a tube of KY to buy them, I may not.