I haven't followed this as close as the start of the tour, as the rotation has gotten waaaay out of whack since, but as it stands now, if no more special appearances happen, I'll get B in Vegas and C in Phoenix which would make me veeeeeery happy. Having seen those two already now, I won't complain if I end up getting an A, but I hope nothing changes. The added benefit is that my gf saw B in Newark, and she'll be with me for Phoenix, so I hope they play C there.
While I think you can debate A v. B, or B v. C, is there really anyone out there that would prefer A to C?
With C you lose Red Barchetta but gain YYZ AND Natural Science.