I bought an Orange 1x12 with my TT, it uses a different speaker to the bigger 2 and 4 x12, the 2 and 4 x12's use Vintage 30's the 1x12 is a Celestion G12K-100.
The G12K-100 is a 99db efficiency so pretty loud, but I'd really like to try a 4x12 at home :)
I really like the Orange cabs, at first I wasn't sure, but I love the look of them now, they look solid and bold and there is no mistaking them :) (ok I have seen other orange covered cabs, but not that many).
After the success of my TT I'm wondering what the AD30HTC sounds like, it has a clean channel that interests me, has anyone tried one?