Well if you drive cams and bearings were still intact I'd just recommend fixing the industrial. If it's more cathartic to get a different one, this is supposed to be fun. I have a few general favorites for candidates.
If you're doing mostly heavy stuff you should probably look for a consew 206, juki lu-563, Adler 120, or if you find a good deal on a different walking foot.
If you occasionally sew heavy stuff you could look at the juki ddl 5550 or 8700.
--If a cow laughs hard, does milk come out its nose?