Well, I'm resolved. I was able to get the board out for a surf in 3' beach break wedges and after a few waves, I had formed a pretty strong opinion. For me, the small middle fin, semi-thruster set up just doesn't feel right. Too skittery, too sketchy. The board was fast, but not a drivey, torquey-type fast. More like a slippery, skating on ice type of speed. Not the feel I'm looking for out there. Conclusion 1: Small middle fin = no thanks.
Conclusion 2: G10 = butter smooth turns and a step up in speed. It's true, these stiffer fins are pretty darn sweet. As opposed to the resin versions of these 467 Tech Foils, the G10s loose no energy flexing through the turns. And you can feel it. When you hit the trough and lean it over, just a little push through the rails translates completely into forward squirt. The fins are fast and they feel super smooth through the water. I'm going to have to tap the 401K to pick up a couple of these- but they are definitely worth it.