Thanks, in my system I have a 2 channel preamp/streamer that uses ARC. My Marantz processor has the paid $200 upgrade for Audyssey (not the $20 app upgrade) and a calibrated mic. I couldn't say one is better, maybe because I have a well treated room. The version of Audyssey that uses the mic that comes with the processor is a noticeable step down than either version.
I do like a warmer sound with music. Accessories4less has the 8805 for around $2500, 3 YR warranty which is around 50% of the MSRP. I don't need the 8K upgrade with my PJ so that might be worth a try.