Although I've already gotten significant and well-appreciated advice from Sunbeast, I'd just like to get some extra opinions from the rest of y'all. Essentially, I can trade my Mesa 400+ and Ampeg 6x10 for a new, unused 2004 USA Ampeg SVT-CL with it's matching 8x10. Fear not; I do have adequate hauling power, and I'm a tough dude. Good or no? I'm going on my 1st tour this summer, out west from Michigan toward California and back. Progressive metal, and not the etude-like Dream Theater stuff. More brutal, like Mastodon or older Deftones. I need lots of thickness and punch, good low-B response, and solid reliability. Guitarists are using a Framus Cobra and Peavey 5150, so I need to drive the songs with lots of balls from within, as opposed to out front. My lines move and are plenty interesting (and damn hard!) but I really can't be flying out front. Despite my need for thickness, I also need each note to be heard. I'm quite happy with my 400+/610HLF setup, but I also found the SVT rig to be very tasty. Tasty enough to consider this trade, obviously! With the SVT, I'd employ my sonic maximizer (to remove the blurry "blanket" from the SVT sound) and my borrowed Sansamp RBI (for a touch of dirt). Thanks in advance!