David,
I've had a list of questions for Symposium laying around for awhile now so your question prompted me to call them today and end my procrastination. I described what I had and ask how to best deploy them. Bottom line, I switched the two platforms under the amp and TT based on their advice that the TT will be better served by the increased absorption of the Ultra over the Super Plus. Otherwise I have them deployed in an acceptable manner. Alternates could be using the rollerblocks under the amp platform spikes if the amp is otherwise well coupled to the platform. (It has several perimeter #4 screw heads that protrude so I think some device is warranted under it and I don't have another set of couplers so they stay where they are at the moment.) He liked my stacking of the rollerblocks on top of the FatPads under the disk drive. He also told me why their rollerblocks are superior but knew the Daruma's and didn't knock them. He also said his round coupler was an improved design over the rectangular one. Otherwise the advice was to move them around and see what you like best, both under different components and in different positions under each component. The advice that is the most common in my research on these devices. He also said the platforms are not vertical isolators. That's accomplished with the spring feet offered on the Segue(?) TT platform. And they could be used free standing under any platform.
I bought a collection of power cords and interconnects from Melanie also. I called usedcables.com a while back and ended up sending them a list of my components and cables, they got back to me with a suggested use location for each cable, I followed it rather blindly.
While I don't doubt the differences in cables any more than the differences with the Symposium type devices, I'm not sure I hear them so I'll take the advice, employ it and called it a day, at least for now as I'm enjoying the system immensely already.
A couple more pics of my room. More bass absorption against the rear wall, ceiling height units on casters due to the doors and bigger than fronts; one 24"x24", one 18"x18". A couple more bolsters of 12"x16" OC too. Room is in the basement, 16' x 26' x 6'10" to the drop ceiling and 8' to the underside of the floor above. I filled the 12" cavity as full as I could with rockwool bats as bedrooms are above. I have birds and fish for roommates and the back right corner has a 5'x4' closet in it hiding plumbing lines. Ideally and if I was willing, it could be mostly eliminated for a better room shape, but that's a project! If the closet door in the front left corner were back further from the corner I'd likely have built the front base traps bigger. I'd still like to raise the reflection freq. and amount by replacing the cardboard on all of them with 1/8" paneling. One day.
Robbie