Funny, I'm building up an A2000 too.An A3000 or A4000 might have more expandability, but the really good hardware is getting rare and stupid priced.
A2000 parts?
Still cheap.
At this point? 8mb of ram, 25 MHz '030, ECS, looking for a good RTG solution that I can feed the output of an Indivision through.
Wish I could go PPC.
Don't really care about AGA (uh, guys, ever bench that against a Voodoo3? trust me, you don't want to - you'll get depressed).