I second that recommendation of the Singer Featherweight.
Look for them on the Goodwill Auction site.
Edit: Here you go...
https://shopgoodwill.com/item/154423913
Edit #2: Newer models of the Featherweight go for considerably more money:
https://shopgoodwill.com/item/154535225
Edit #3: Hmmm, here's one I could pickup since it's at the OC site:
https://shopgoodwill.com/item/154361070
Edit #4: This is the site you want for parts etc for the Featherweight:
https://singer-featherweight.com/
Another, more modern all mechanical machine would be a Pfaff Grand Quilter.
Either one won't be all that cheap, initially, but, it should last a life time.