I took Machine Quilting Negative Space and really enjoyed it. She uses a long arm herself, but the techniques are for any machines (I use a standard domestic Singer). Some of what she covered I already knew, but there were a lot of things I never would have thought of.
I think I'm going to go for the hand quilting class next, and maybe one on scrap quilting. I've never really gotten into either so I'd like to work on both this year.