Hi-
I really like them! I am taking their course now. They are great and the teachers are really accessible. I have Jon Orsay himself at my classes (at the Columbia site). He is a great teacher and is willing to meet outside of classes for extra help. Just call him, he'll probably pick up the phone.
I've been out of school for 3 years (some courses were 5 years ago!) and I haven't had a problem "re-leaning" the material because the books are so great.