Thank you all. I did tweak speaker positioning and will do more this weekend. I've only had the speakers a week and have worked long hrs so far. They have about 80hrs run-in time on them. Stephen at Neat said 200 hrs is their recommendation so more time to go but you've given me great food for thought.
There seems to be a strong sentiment for a better sub, or maybe two. My prior understanding is that adding stronger bass uplifts the mid bass punch and provides better overall sound? Sounds like you agree. I actually lowered the REL crossover setting to about 50 Hz from 80 when I switched to the Xplorers which advertise 30 Hz v. the Paradigms that were at 70Hz. I did lower the volume too with the idea that a lighter bass volume from the sub would support rather than overwhelm the main bass output. My plan is to boost the sub volume and play with positioning this weekend. Also, Stephen at Neat said at a recent show he drove the Xplorers with an Atoll IN300 amp, FYI.
I love the idea of room acoustic treatments, just something I have to see how to achieve. That's a new area for me. I'll look into that and see how to analyse and treat the room. I know all the "cheating" that goes on at audio shows is for a reason :). Thanks all.