Out of curiosity, how do you see the overall Senate picture?
I don't predict the Senate. It is too early, and too volatile. Those that do are just wasting bandwidth. The thing about the Senate, unlike the House, is that there is high media exposure, debates, etc., and things can swing, and gerrymandering is not in play.
Having said that, if things move more than a couple of seats either way, it will be a surprise, as of now.