For pros and serious DIYer on cabinetry and general woodworking, the table saw is king. It is, however, practically useless for any sort of model airplane building. I have a contractor-grade table saw in my workshop, and I don't remember every once using it for any RC model work.

If it is your first power tool, after a power drill of course, for model building, it should be a jig saw. It won't do some cuts well (eg. straight-line cuts), but it will do all of them adequately. The second saw should then be the band saw, equipped with a fence. It's okay to start with the latter, but you will invariably find cuts it just won't do.

There are miniature table saw suitable for model making, but I think they are too limited in their uses to justify a place in all but the tiniest workshops.