So the source material needs to contain some information for logic 7 or PLII to sound properly like live jazz performances? Then how many regular Pop/blues/Rock Cds can sound good with 7 or PLII (better)?

So, far very few CDs of mine do. Take My Generation SACD (2CH-analog), if I listen to My Generation (song) L7, part way through my right surround goes very high in volume and then it will go back to it's normal sound seconds later. If I listen to The Beatles "For Sale" CD, I get barely any surround sound. When I listen to the Grass Roots anthology I get vocals and instrumentals that drift in and out but not completely from the surrounds. The overall result is fluctuations in volume and presentation that become annoying very quickly.

So, I'm thinking for a 99.9% music listener is surround processing really worth the cost for a mainstream music listener.

(Note: I do realize my sound problems could be a receiver malfunction-speakers,cables, and player seem to be operating fine.)