Thanks for the information and encouragement. I can get approx. 1280 x 900 screens on the ZIII but can only have one open at a time due to 'lack of chip ram.' It's good
to know I can use the Radeon as my display card with more ram. I'll post here again
after I get the package and, hopefully, set it up correctly. I never had any trouble setting up the Retina drivers but gave up, after many attempts, to get the CyberGraphX v4 software to work with either the Retina or a 64/3d card. Hopefully I'll have better luck with p96 and the radeon.
I ordered also Mediator A3/4000T with the Radeon 256MB back on October 20th...still no package arrived yet and no reply from Elbox last week when I emailed them requesting status.
I think they may be making new batches, or waiting for enough orders to ship....

In fact on their site the availability of the Mediator 3/4000T reads "two weeks".
I only wish they would have improved them more...trying to find 5V only cards is a pain in the ass, as most cards require 3.3V nowadays. The only one that can support 3.3V is the Mediator TX for the A1200.