Hey Thanks, I appreciate that. I've always leaned towards 15's even from way back; I was convinced or "talked into" going with 2x10's over a 1x15 and found that there was something missing but couldn't exactly put my finger on what it was at the time (I was coming from an Ampeg BA-115 combo) and now realize it's that more rounded, warmer tone that I'm not getting with the 2x10 cab (I A/B'd them before selling the combo), so I added a second one (2x10) and it is better, but in the end I'm now convinced that 15's are what's gonna do it -(for me anyway). Thanks again, and I will keep an open mind/ear out for other options or suggestions.
Well, my point was that even within the most common Avatar B210 versions (original non-Avatar Deltas, Avatar Deltas, and the Avatar Deltalites), there is a pretty wide range of tonal variation, but if you have your heart set on 15s don't let me be the one to stop you. FWIW, my personal rig consists of a 115.