That's a tough one. Definately the band saw if you haven't got a good one...other than that, I'm not sure. The table saw would be nice if, like Todd said, you have the space for it.
Beyond that, I'd look at things that you would like to improve on your builds, whether they could be better or if you could do them more effectively, and buy tools that will make those things better/more efficient. I have found that I don't need a table saw, but others wouldn't want to be without one. Different strokes for different folks and all that stuff.
Either way, you're right, the next one had best be a good one. You've got some great friends and family there. Hang on to them.
Official Short Scale Club #300
"I've built a bass from rough lumber" club #19