I'd much rather have a V4B than any SVT. With two EL84 adapters they can be run at 100W, 50W, or 25W (can be handy for guitar). You can also mod them for 6550's and run them at 130W, 65W, or 32W. SVT's can only be run at 300W, so they're only getting full saturated tone in arenas. I don't trust tubes beyond a V4's power level anyway, nor does my back. I'll take my SVP-CL and IPR 1600 over any SVT too.