I have the Juki 2010Q and love it. I also have a Bernina 630, but mostly use it for embroidery. My Juki is my "go to" machine for piecing and quilting. Since it is a straight stitch only mechanical machine, I don't think you will need classes. I bought mine from a local dealer and there were no classes included and I had no problems learning to use it from the manual.
There are some dealers here that can service other brands, even if they don't sell them. You should check with them. Since the Juki's are rather basic and semi-industrial machines, they tend not to need as much service as the computerized machines.
Hope this helps.