For whatever machines that are acquired -
make sure that they sew well - it is very hard to stay interested in sewing - especially as a beginner - if one is trying to work with something uncooperative.
Some inexpensive machines can work well - and some expensive (as some of the purchasers of the Bernina 830 QE can attest) can have problems -
Also - if possible - try to have the machines be similar in operating capabilities so that you don't have to spend a lot of time trying to demonstrate how to run them or troubleshoot.
Expect to spend some time troubleshooting. There are still untried ways to get a machine to balk!
Last edited by bearisgray; 09-15-2015 at 08:53 AM.