FAUguy, thanks for sharing your impressions. About 99% of the time I have had my 990, my mains were set to small crossed at 40Hz and my sub to LFE Only.
When I tried my sub at L/R+Sub, it was way too much bass for anything multi-channel - I have 7 speakers and all others were crossed at 80Hz.
Before the update, the Small Mains (40Hz) and "LFE Only" was the best setting for multi-channel in my system, but this caused Stereo 7 to sound better than Upsample, which sounded too bright, and regular stereo, which sounded a little dead for my taste.
I have to go through a few of my DVD movies that I typically demo, but I already know I am going to like what I hear. I played The Eagles' Hell Freezes Over DVD in DTS yesterday and it sounded awesome.