> > platforms that might be worth checking out?
>
> How about NetBSD/x86_64? :-)
>
> Do you want to consider workstation, server, or just general coverage?
> For workstation I would say add a Mac, for server a sparc64.

because of what (i mean sparc64)?

is it's support in NetBSD really stable?
is it fast in given price (the answer is no AFAIK)?
stablility (that's probably true, but i don't have comparision)