My Zen answer would be......yes!
Seriously, try both if you can. A 1x12 with the same width as the matching head can sound a little boxy. In a wide body combo a single sounds great. A 2x12 is more to carry but almost always sonicly better.
Yeah I think so too! 2 x 12 it is then.
Would they sound nice too with my Expression. I have a DC30 which I used to play through a Blue and G12H30...lovely...
Sold it to generate cash for my overtone...
Is the consensus that Celestion G12-65 are the first choice.? I notice they are 97db. That may help quiet things down a tad.