I've had to do a lot of research on heads, cabs, and the pairing therein because my band is started to gig so I feel I have a good u dersta ding of what the numbers are and what they mean. In response to Bugera/Behringer skepticism I can only speak from my personal experiences which is very positive in terms of longevity. I FIRST got an Ampeg PF800 and Ampeg SVT-410HE but the amp fried in my third practice with it and the low left speaker AND tweeter blew in the same event. Thus far the Bugera has made it through MANY more practices than the Ampeg and has seen gigs. I have similar experiences between my Behringer BX4500 and BA115 as well. It's working for me and I like it, so I've won the Brooklyn Bridge in my mind.