I loved the sound of the svt210av's like yourself, but micro vr was not enough power to cut through the drums. Went through a couple other power amps even trying a Tech21 RBI with a power amp, but settled on a Mesa Subway 800. The sound is warm, I can get a little breakup if needed and it drives those cabs very well. YMMV, but a friend who plays bass and owns a local recording studio loved the sound so much he went out and bought the same head. Worth checking out.
I have considered getting the 350 just for options.