Any of the powders you list should fair well, in the G2's closed breach you get a good 100-200 fps over a "revolver" anyway, so why try to hot rod it any more? I like AA#5 believe it or not, with 280g hardcasts I'm getting 1250fps or so, consistently, with #9, if I remember right, I was anywhere from 1300-1500 depending on the charge! and man was it accurate.
If you don't mind a little more ooomph, {technical terminology}, stay with the #9, if you want to throttle it back more then a 100 or so fps from your "optimum" 240g xtp load, then, try some of the faster powders.