Love the Genz Benz gear. I have a GBE 1200 head. It has EQ options out the wazoo, 2 channels (tube pre and SS)and a global signal shaping section that can add a lot of overall flavor to both channels if you switch back and forth (I typically use either or...and waffle back and forth on which I like best). It will also do 2 ohms all day long, and depending on the size of the venue, I use it with a varity of cabs (Genz Benz NEO 212T, Ashdown 4x10, Ampeg 4x10 , Ampeg 6x10, Mesa 1x15, Mesa 2x10). I really think it sounds great with pretty much any combination of these cabs..a lot of different tonal options...
I played a gig this weekend and used a new Fender rig as backline (because it was there, and well, Fender sponsored the stage). It was their new "high power head" and a Fender 8x10 cab. Man, I was not digging that rig at all...Nothing against Fender in general, but I couldn't get a decent tone (IMO) out it to save my life...it lacked any articulation at all, and the cab was farting like crazy...and the cab was mic'd. We were in one of those situations where they were just "shotgunning" bands up and there was really no time to work on anything...It was just plug in and go....