I have a BBE Bmax pre and a Markbass Traveler 15 cab (400 watts at 8ohms). I've seen lots of posts here about having headroom in your amp -vs- trying to match power output with the cab. For tonight's gig, I could use either a QSC GX3 (350 watts at 8ohms - i'm only running one side) or an AB Precedent 600A running 700 watts at 8ohms bridged. Which way would you go? If i get to the gig and the GX3 is not enough power, you can't bridge them so I'm stuck. By the way, I'm playing a big club with PA and sound engineer. The amp is just for stage monitoring.