Phil, you're now considering $600+ AVR's, and have your eye on
$250/pr Polks for mains?
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If you're finding extra funds, I'd be ploughing them into better speakers and subs,
not the AVR. A quality pair of bookshelves from Ascend, PSB, Focal, Monitor Audio, NHT etc and perhaps a bigger sub from Dr Hsu will yield a jump in performance rather than the incremental improvement of going from XT to XT32.
Sorry if I sound like the fun police.
The price of the X2000's and 2113CI's will probably drop further too... and they have perfectly functioning DEQ!