I finally had a chance to run a full 15 point pro calibration in the finished lay-out and do some critical listening this weekend.
I did do a 13 point one when I first set up the room, and knew there was something special with XT32 right away despite having the sub in a crappy location. I've only done a couple of hasty six point calibrations since I moved the sub. (So hasty I didn't even noticed I'd turned on the sub's bass contour where it gives a big boost to a specific frequency.)
I wish I could have have had XT32 in the treated room I had previously, I'd be curious to hear how it would have done in there.
But as a testament to the upgrade, its performance in my untreated room with a lesser sub is equal to the results I got from the XT, and in some cases better. The bass has no bloat with music, maintains excellent "tonality" and still has impact with movies. The top end is where I thought the untreated room would lead to brightness, but it's not the case at all, it's at least equal, and in some cases like vocal sibilance it's actually better.
The only negative is with two channel music the sound-stage seems to be a bit more "inside" the width of the mains. I've got a hunch that has more to do with speaker placement in a slightly wider room than Audyssey. When I get around to coming up with some WAF friendly treatments I'll do some more work there.
If someone else posted pics of my room I'd be all over them for the lack of treatments lol! So now I'm the pot calling the kettle black. Oh well, at least I have something to look forward to.