Been riding the 9'6 Sub V over the last couple weeks trying different fin setups. This feedback is relative to my weight which is around 70kg, so for heavier riders, would go for the larger fin setups. Have to say I am loving the board though, goes great with whatever setup I inflict on it. Really fast and comfortable/stable. Love the concave deck.
Futures Controller fins go unreal in this board. Drive and hold are good, but can still do a slash cuttie if you push it from the tail. You get a great feel for the board with these fins, and foot positioning makes a big difference.
I also liked the T1's with 2x TT1's as quad rears (T1's come as a twin plus single stabiliser, so had to get extra TT1). This is a good setup for small to medium waves as it is loose, and the 2 stabilisers gives a bit more drive and control without too much tailslide/stalling.
For bigger and/or more hollow waves, the Lopez quads give great hold and are excellent for long carving turns (sorry didn't get pic with full Lopez Set in), but are a bit much for my size in smaller stuff, so I kept the fronts in and put SB3's (same size s TT1's) in the rear to loosen up for small to medium waves.
Haven't tried them in this board yet, but the Simon Anderson quads are also good, drivey fins, and would go great for heavier riders.
Also haven't got around to trying thruster or 2+1 setups on this board yet, but looking forward to trying some different options...there's a lot to choose from tho...
Hope this helps if anyone is looking at quads for the 9'6 Sub V.