Must say the hangtime on my Torch 3s (and 8M T4) is phenominal, I used to ride Waroos and have no problem getting the same hangtime, I'm learning one footed jumps/boardoffs and there's easily enough hangtime to make the move easier.
I think you get better hangtime because there is a technique to it, on the Waroos I just moved the kite a bit, edge and sheeted in, on my Torches I send it back whilst edging to past 12, then release my edge and steer the kite straight up giving extra lift
Chuck a loop in on the way down or some serious redirection and you can get mega hangtime
For me the 12 is the best size (have 8, 10, 12 and 14
) but thats maybe because I'm a fat lad @ 13.5 stone