I am considering one of these to replace my Markbass LMK. Probably the 500W version as don't need extreme volume. I'm looking for vintage tubey warmth with maybe a touch of drive. Have read many good reviews, but not clear if they only apply when the head is used for rock/metal (more overdriven tones). So, how versatile is this head? Does it sound good if used fairly clean? Would the Markbass Little Mark Tube be a more versatile unit? Thanks for your comments!