I will say, though they do not March a lot in the show, their is a LOT of choreography that goes very unnoticed, and that has to go with the progression of DCI. In my opinion doing dance choreography while playing is just as difficult.
I will say I find it interesting that BD, SCV and Bluecoats took a couple of days to just rehearse and when they finally had a show they increased their score by 3-4 points, Crown took 5 days and only increased 1.5 points.
My pick is Crown. From what I've learned these past 3 years is that BD and Bluecoats are notorious for making there strides in finals week where Crown is very inconsistent in finals week. But who knows, this year maybe different.