So these are the two that I've got it narrowed down to. They'll both run at 2 ohms, which is important to me, they're both around 300 watts, and they both seem to have fairly powerful and extensive preamp/eq sections. I've tried the 400+ at the GC near me, but they don't have a Bassman 300. What I want to know from people who have (preferably) had occasion to try/hear both of them: how flexible are they? Will I be able to run them dirty in a modern rock setting? Will the same amp do me nicely under clean jazz conditions? Do the compressor and the dirty channel on the Bassman come in handy? I run passive instruments (i don't want to have to deal with batteries and all those knobs and junk), so having hi/lo inputs (such as on the mesa) is of no importance to me. Thanks all!