how many folks have +10kVA trannys before the rig?

Zargon:
A very nice installation. I tip my hat to you.

Rhyno:
The 'archtecture' page on Zargon's system displays very clearly the guidelines that are spelled out in the Topaz (Square-D) documentation. The only variation that I can see is that Topaz states that (if possible) it is preferable (regarding the downstream ISOs) to place them as close as possible to the load component.

For a look at another system that utilizes a configuration in line with what you described, look at:
http://forum.audiogon.com/cgi-bin/fr.pl?vstrt&1041994460.
Lak uses double 5KVA ISOs (one per 120V leg) feeding his sub-panel.

You might find it helpful to search old threads on this subject. Though he does not post anymore, the past expert on this subject was 'Sean', who was a strong advocate of multiple ISO combined both downstream and upstream of a sub-panel. Sean was also an outspoken advocate of putting further isolation circuitry in the 'bells' of the ISOs.

I am using multiple small ISOs (just like the single that Zargon uses to feed his CD). I have found that some components really shine when placed behind an ISO, and some do not seem to care.

Zargon:
Yes, that is what I was trying to communicate. I hope that you understand that I meant absolutely no disrespect by quoting what the documentation says. I can think of a thousand reasons why an ISO might very well not be the most desirable component in a living environment. Like I tried to say, NICE install.