I've got 2 machines that I use. An old Kenmore that dates to the mid '60s. It is a solid machine with zig-zag and does pretty well on most stuff. for the real heavy stuff I have an old singer 29K60 that was designed for the shoe trade. it will sew pretty much anything I can get under the walking foot.

Being able to control the speed of the machine is pretty important and double so for someone just startng out with sewing. A older "generic" commercial machine may not have the speed control you want.
I've been looking at the Sailrite LSZ-1 and will probably end up with one in the near future.

Being able to control the speed of the machine is pretty important and double so for someone just startng out with sewing. A older "generic" commercial machine may not have the speed control you want.
I've been looking at the Sailrite LSZ-1 and will probably end up with one in the near future.