Yes you are right on.....
some new HP drives made by Sony in the 8000 and 9000 series do work as well.
i did red alert 2 on 121032a (IDE) works fine in all kinds of drives and all kind of systems.

Philips and Mitsumi drives are the best to write on safedisc and safedisc 2, use Toshiba (ide) to read.....