I actually have 3 backups. One is a Kenmore with decorative stitches which is in the attic. I never liked the machine.
I also have two Vintage Singers in cabinets. The first is a Model 66 which was built in 1930. When I bought it the bobbin winder did not work, but for a $2.00 tire, now works perfectly. Cost me $40.00.
Next is a model 201. This was built in 1937 also in a cabinet. After oiling and cleaning, it works with a nice stitch. The problem is if you go fast it does squeek a little. I gather from the way the bobbin was packed with lint that they never oiled or cleaned the machine, which I did. I might need a little grease and possibly a new belt. I saw tiny cracks in the bobbin tire, but it works perfectly, very smooth.
What I like about these is the stitches are perfectly straight. They were made before they started making zig zags and from what I understand that is why the stitch is so perfect.
I actually like sewing on these better than my Janome. They only go forward, no reverse, but as long as the quilt is not too big, I just turn the fabric around.