I think I will go with the 2 XA1000s. One of my friends says that will probably run cooler than one large amp anyway, be less likely to overheat.
Is there any difference between wiring one two channel amp, and two one channel amps? I mean, is there only one output on a headunit for subwoofers, is that somehow "split" into two amps? Or should there be two seperate sub outputs, one for left and right? I'm just making sure, so I don't buy 2 amps, and then have someone tell me "we can't hook up two seperate amps for your subs" and then be out $150.
I hate best buy too but there really is no other place to go. I've been ripped off multiple times by little independent shops, so I don't trust them AT ALL, and the only other chains beside best buy and circuit city, are places like Chronic Car Audio, which are run by 24 year old community college drop-outs who I wouldn't trust with my ipod, let alone hundreds of dollars of my car audio. Best buy has a policy where they gaurentee they will install it right, or they will either fix it for you or refund your money. The other shops don't have that. Frankly, none of my options seem good, I don't really trust anyone to do a good job, but at least Best Buy will refund my money if they **** up, other places won't.
Thanks again for all your guys' help, I'll post pics and my results when this all gets done so you know how everything turns out.