I love the a3000. I have owned two desktops and one a3000T/040. That tower was amazing... I miss her dearly. *sniff*
Lol but in all seriousness with an a3000 if you get an acard scsi to ide adapter and a compact flash adapter, you will already have an awesome machine. And it's got tons of upgradeability. I love the built-in vga. The a4000 in a lot of ways is a downgrade, IMO the only real upgrade is the aga chipset.
I've never owned an a1000 but I don't really know what the benefit would be for having one. I don't see a ton of things out there floating around so far as a1000 upgrades go
