Right now I'm using a Yorkville XS400 into an Avatar 212 (newer one) and I'm feeling it's pushing the cab a little too hard. We play loud Kyuss/Sabbath stoner rock as well as some fast punk stuff. What do you feel would be the better move for lessening the strain on the amp: 2x15 (older peavey w/BWs?) or 6x10 (Ampeg maybe?) or 8x8 (newer Traynor?) The Avatar is a 4ohm so I can't add to it and I hate carrying multiple cabs.