Sometimes I really like pine, other times I don't... Knotty Pine is a pain in the ass to cut. The knots cause it to fall apart as it's running through the saw, and that can be dangerous. Especially if the saw blade catches a knot and sends it toward your face at 100mph. It's also so sappy that you have to do a lot to it in order to put a finish on it.
I've worked with Ponderosa Pine and Sugar Pine, and they were beautiful... easy to work with too.
Of course, that's my opinion based on working with pine. I like the way it looks, so if someone else were doing the work it would be cool.