This is really hard to advise you on. If you were in the U.S., I would say go with the A2000. You can find accelerators, network cards here. In the U.K. or Europe I might go with the A1200.
I have both an A2000 and an A1200, and I like them both a lot. It all hinges on what software you plan on running.
Here in the States, better deals can be found at HAM Fests, computer fests & flea markets than on eBay. And eBay is NOT the only place to find Amiga parts for sale! Amibench comes to find, although I haven't been there ina while.
Good luck, which ever way you go.
