I came back to "Amiga" this weekend after 13 years away, and after a lot of research I went the way of MorphOS due to cost and support.
After a lot of digging I found that I needed 64Mb video RAM, which if you're getting a Mac Mini it HAS to be the 1.5Ghz one, which was silently upgraded by Apple from the 1.42Ghz ones, so the box and everything about it says 1.42Ghz, until you go into "About my Mac" in OSX.
Another pitfall, when people put them on eBay, it forces them to put in the model number and the majority eBay gets the automated description wrong and buts that it has 64Mb video RAM. I spent 2 weeks constantly checking eBay and emailing the users and asking them to check in "About my Mac", any that came back with 1.5Ghz I put a bid on, early last week I got one for £110 delivered.
I chose Mac Mini due to the low noise level and power consumption over the big Power Mac towers as it sits in the lounge at home. You can get a PowerMac G4 for £50 or under
