>accession:
http://www.xlr8.com/ (and scroll down!)
>others:
Be careful, by buying a machine that will be ready without a need for an upgrade when OS-X comes, out, you risk to end up with a machine that's obsolete anyway when OS-X comes out, which might well be wayyyy later than you think [rumors are talking about a beta version for February 2001!!!].
Buy what you need, now. No less, but no more.