A factor is which type and size wood you will be working with.

Will you be cutting up full sheets of 1/4, 3/8, 1/2, 3/4" etc. plywood, and 1x3, 2x4"etc. planks for framing? Or balsa and lighter/modeling type plywood?

One size saw cant do both efficiently.

Determine first, what kind of wood you will be working with.

If...you will be working with modeling type material, which includes high grade plywood at least up to 3/8"thick...
Then the saw Henry Pel lists (Dremel 580) is excellent, and has proven to be a great asset for modeling as well as other lighter projects around the house. MicroMark sells a carbide tip blade to fit this saw, which I highly recommend. Mount any saw of this size firmly down either directly to a work bench, or onto a larger piece of plywood which then can be clamped down to a work bench. Always use goggles[8D]