Hey, I have a question: Should I get a Hartke 3500, an SWR Workingman's 4004, or an Ampeg B-2 head (not B2R)? I am concerned above all with the quality of the head. Volumes are all close enough, and versatility is not a must. I just got an Ampeg B25B all tube head, but the darned thing just isn't loud enough!!! Thanks!