GC,
I would be interested in hearing how the 633T's work out. When I ordered the PT's there were no 3-way towers in their line up. So when I was a little disappointed about the mids in the PT's (compared to the 4-driver continous array in the RS750's)and talked about that to Aperion, I suggested to add 1 or 2 6.5'' drivers to the PT's. Obviously they didn't listen to but the the new 633T might be an alternative ?!
Also, nice choice of TV there! I got the same unit about a month ago and am still amazed by the picture quality, especially with HD telecast and Blue Ray. It will be sweet for my upcoming Superbowl party too.

I'll try to post my impressions once I've had a chance to do some comparisons. Very much looking forward to that.