As the title suggests, is 120 watts loud enough for, say, a stage gig? I'm being offered a Hartke HA2000 amp for cheap that cranks at 200 watts/4 ohms but 120 watts/8 ohms (which is what my cab runs at). To put things in perspective, the guitarist is playing through a Vox 2x12 combo, drummer plays on a jazz kit and I intend on plugging the amp through the 8 ohm 4x10 cab. Will it do me justice or will it serve me better as a prac amp? Thanks in advance.