As for mains there are just too many risks for me. Not only the first switch on, but later on with perhaps a poor earth or even a fire. I need something which has been built, tested and warranted so that I can get on with the bit I enjoy which is the Engineering and machining.
I think this is a very sensible approach , in my opinion the unregulated power supply is best as it does not generate any noise type interference etc. ..Clive