>>> I think only the Radeon 9250 is fully supported in AOS4.

>> as there is virtually no difference between the 9000, 9200, and 9250 from a
>> driver's perspective, I'd have to question that.

> from what I've read, the other cards are either not fully supported or lack 3D. Or both.

Then you read it wrong. Beside the 9250, Radeon graphics cards supported in both 2D and 3D on OS4 are 9000 and 9200 (as Jim said) as well as 7000, 7200 and 7500.