Singer 8280, very basic with mechanical insides: $90 from Target.

It's pretty easy to use, a good feature since I had last touched a sewing machine 40 years prior. This machine did well for an X-kilt in cotton twill. I did the final waistband seam by hand as I would not want to try to top-stitch accurately with that many layers of cloth!

So far, all my tartan work is manual. I will happily leave machine pleating of tartan for the professionals!