I think this is a no brainer if your budget is $2500: Audition the 990 in your own home, and take advantage of Outlaw's 30 day return policy.

From a review of the Denon AVR 3802 at http://www.audiorevolution.com/equip/denonav3802 : "There is a 5.1 'ext' analog in, expressly designed for high-quality audio devices such as an SACD player, so we can optimistically assume that it does not ruin this by converting it to PCM for processing."

I've never tried this, but it may be possible to run the 5.1 outputs from the 990 into the 3802 5.1 inputs, so as to use it's amps with the 990. You'd have to set the 3802 flat across all speakers, at a fixed level (probably close to max), and calibrate with the 990. That would let you evaluate the 990 by itself without having to get a bunch of amps or a 7125 that would cost you plenty to ship both ways if you decided you didn't like the 990.

Of course, it would be ideal if you could audition the final setup in one step, and not do it piecemeal -- how much are you willing to risk on shipping if you don't like the 990?

You can add my name to the list of extremely satisfied 990 owners, by the way.

I do have reservations about the M200, and because of that am wary of Outlaw amps in general, but that's based on reviews and measurements -- I don't own one, haven't auditioned one, and others claim to love them. I guess I'm just not fond of Class AB/G amps. YMMV