Well... After much reading, many telephone calls and a lot of driving, I'm done upgrading my system for now. As some of you may remember, my quest started when I had the opportunity to upgrade my Pioneer Elite VSX-26TX AV receiver to a 53TX at a VERY substantial discount a couple of months ago, thanks to Pioneer customer service. I had been using the 26TX with the Polk RM6500 satellite system for 4 years. I started my speaker upgrade at the beginning of this month. For a total investment of a whopping $898.63, which includes tax, I have upgraded my speakers to all new (2) RTi70 fronts, (1) CSi30 center, (2) RTi38 surrounds and (1) PSW404 sub, I kid you not I'll either be selling the RM6500 system on ebay or give it to my 14 yr old son. After a little dallying, I have all speakers set to "small", the sub connected to the LFE ouput and the receiver x-over set to 100hz, pretty straightforward. I really like this arrangement, I have much more flexibility than I had with the sub in the RM6500 system connected using the "Polk method." With the x-over set to 80hz, the bottom end sounded weak, at 100 hz, it sounds rich and full. The RTi70's are biwired, I did that a week ago and it DID make a slight improvement. I was also amazed that moving a speaker just one inch makes a difference in the soundstage! I have the fronts toed-in somewhere between a 5 and 10 degree angle. I have the volume control on the sub set at ~10:30 and the sub level on the receiver was automatically set to +0.5. Using the RS analog SPL meter, with the receiver volume at reference level, the sub seems to be around 77-78 dB. The Pioneer MCACC is absolutely incredible. Other than maybe messing around with the wiring (heavier gauge) and speaker placement and positioning, I AM DONE! It's time to enjoy what I have for several years. I had to get this out of the way before I got married (it appears the ex and I are going to remarry) so I don't have to worry about the WF.