SuperG
Vegas - all the tracks you can muster. Just consider the video functionality a freebee.
I purchased Sonar X1 because Vegas will not do what I need for it to do as far as audio production.
I do video production too, and use Vegas Pro 11 64 bit (I have VP 12 but it doesn't seem to work as well for me as 11). In Vegas 11 or 12 you can not solo a bus. If you do, it will solo that bus from the other buses...but will also play any track in the TV that isn't sent to a bus. So...bus soloing does not work. It even states in the manual that this is how it is supposed to work now. I also have Vegas 8 and you can solo a bus with that version.
But you are correct...Vegas does not support midi routing :) .
But...to me it would be like going from a new Porsche to a 1972 Ford Pinto.