It will be a while before Thunderbolt becomes a reality. For that matter it may not become any more widely used than Firewire. But then something will replace Thunderbolt after that. So you should probably just give up, since anything you buy will eventually become out of date. ;)
I'm sure I'm going to catch a lot of flak for this next part from Mini owners and Mac lovers. The Mac mini is a pretty limiting option (but is also cheap). I have done a lot of testing and a correctly optimized PC sounds better and more dynamic than a properly optimized mini. I suspect a big part of that is better player options. If it were my $ I'd look at a PC or an Apple desktop so that future upgrades can accommodate new technology.
I'm sure I'm going to catch a lot of flak for this next part from Mini owners and Mac lovers. The Mac mini is a pretty limiting option (but is also cheap). I have done a lot of testing and a correctly optimized PC sounds better and more dynamic than a properly optimized mini. I suspect a big part of that is better player options. If it were my $ I'd look at a PC or an Apple desktop so that future upgrades can accommodate new technology.