Although OF is a pretty good idea, you're a bit limited in the gfx cards that you can use (ie "Mac" gfx cards), and they are usually more expensive. It might be a good idea to add a UBoot driver to AROS, so you can have both. With UBoot you can use cheap "PC" gfx cards (it's got a built-in x86 emulator so the card's BIOS can run on that). Since it's on SourceForge (or if not, should be by the time AOS4 is released), it should not be too difficult to find out what you need.
Surely this isn't completely true. The Voodoo3 in my Pegasos machine is PC centric, not a Mac version. I've also had my pc's Radeon card running in the machine too.
