The Bernina needs a new foot control. Rest in good condition. It has good reviews on Google and does have zig zag, although not sure that is needed with my Jenome on hand.
Vintage Bernina 811 Electronic

The Singer is beautiful! in pristine condition. Straight stitch only.
1922 Singer Model 66 Sewing Machine

There are other older Singers with zig zag also for less than $100 some less than $50. Just trying to decide which way to go. Here is an example:
vintage Singer sewing machine with beautiful mosaic top
I am wanting this for a second machine to do piecing and such when I have my Janome working on quilting something. I also want it to teach my 12 yr old son some sewing basics.

What would you do?