Anyone have experience with these 2? Which one has more gain? Which one has tighter bass? Which one has a bigger bass, in other words, more extended low end? Which one has a faster response? Which one clean up with guitar volume knob better (and still retains sparkle and shimmer)? Anyone has any experience with both the 6V6 and 6L6 versions of the Blackbird? If so, what are the differences besides the obvious increase of headroom and loudness? Is one version dirtier than the other? Warmer? I'm looking for something in the BF Fender category with reverb but is capable of more distortion than a dimed BFSR and doesn't lose low end clarity and punch when dimed. I would also prefer an amp that cleans up to a warm, slightly overdriven sounds that retains all sparkle and shimmer with a twist of guitar vol. knob. I'm not a big fan of ODS type overdrive and clean sounds. For the most part, the response is too fast for my liking. That makes the clean sounds too hard sounding and the slight breakup too aggressive. Any ideas?