Need some opinions. Right now I am using a SWR SM-900 with a Schroeder 410R and a 1212R in a "classic" rock band, but I just don't get quite the volume that I thought I would. The tone is killer, but I feel a little underpowered. I don't want to increase the weight of my rack if at all possible, but expected a little more oomph. I am in the process of swapping the 1212 with a 412L, but am questioning the best amp to drive this combo. Any thoughts ? Considering a Thunderfunk TB750 or an Ampeg SVT8Pro.