I just bought a Mesa-Boogie 2x15. I love 15's for some reason. Anyway, my band went in to the recording studio the other day and there was a Mesa-Boogie 400+ with a ampeg 8x10. Ohhhhh man. I almost wet myself. Well my 2x15 hasn't came yet and I was wondering if 2x15's push as much air as a 8x10. I heard more speakers more volume so would my 2x15 sound considerably less powerful than that 8x10 was? Oh and I need a head so what would you recogmend used or new to power my 2x15 with Aprox. $600 - $700? No all tube 90lbs heads.