I've been noticing that my mids on my Knucklehead are a little finicky with my Avatar, which has V30's up top and G12H30's on the bottom, being a little familiar with the 75's sound, I went to the local GC to try a Marshall cab, and I think I liked it better than mine! This may not come as a surprise, seems that alot of you don't like V30's, but I'm not sure if you guys like 75's either, I don't see them getting talked about 'round here. I noticed ALOT of smooth low end, more relaxed mids than the 30's, which let me use my mid control on my amp more effectively, and no harsh high end at all. I'd like to hear some of your opinions. I'm wondering if I should replace the speakers in the Avatar, and/or how much the actual cab had to do with the sound difference. I play modern/classic rock, I set the Knucklehead pretty much to sound like a hot rodded Marshall.