Having the extra high foot lift on the industrial is really useful but my old Singer 201K will go through most things with a little manual help. My plastic Toyota machine is rubbish but it does do buttonholes and doesn't take up much space.
My machines:
1) Singer 201K - mounted on industrial table and was powered by industrial motor until it suddenly blew up the other day
2) Singer 460/13 overlocker - mounted on table. Bought by mistake, but it was cheap and although I find it a bit scary, reluctant to sell it on, especially since I learnt how to thread it
3) Toyota RS2000 - normal domestic machine, keeps losing timing because I push it on thick materials but does buttonholes
4) Pinnock Sewqueen - vintage zig-zag machine. Has a lovely dial that displays actual samples of stitching length. £10 from an auction. Mounted in cabinet
5) Wimsew W246 - industrial walking-foot cylinder arm, on table with servo motor - awesome piece of kit - Pfaff 335 clone
I could get rid of the Toyota and do buttonholes manually on the Pinnock. I could get rid of the 201K and use the Wimsew or Pinnock for straight stitching but it's so damn lovely to use (and I've just ordered a treadle belt for it so I can put it back in the original cabinet for when the lights go out
)
I suppose I could just buy an industrial zig-zag machine and get rid of the Pinnock, the Toyota and the 201K but they're reasonably expensive...