[QUOTE=mom-6;6268477]Unless there are specific features of one machine or the other that makes it better for that particular class, I would take the one I feel most comfortable taking along.
Agree with this. What features do you need for the class project. Take the one you want to use and is easy to transport.
I have 4 machines. The lightweight small machine that's easy to move and does most stitches. The straight stitch, semi-industrial with a great harp space, very dependable. The standard size zig-zag with lots of bells and whistles. The Bernina 830 with embroidery attachments, it does everything but it's heavy and large.
When I'm teaching at the Bernina store, I take a Bernina or sew on one of their's. Traveling and piecing, I take the lightweight machine. If I'm quilting I take the "great harp space". Want to learn how to use a particular machine, I take that machine.
And I love wheels. I have a case for each machine and don't carry them, I wheel them. I'll even park to use ramps so I don't have to carry them.