Ok, so, based on available funds and availability, I went with the Hankook RS4's. I know they're not a proper R compound and maybe I'll upgrade to that one day. The fronts were $170ea which was hard to beat and the rears came in the factory size of 255/40/17 which is apparently a little uncommon.
Hopefully they are ok on my super slow, super body rolling E90. Not a lot will be asked of them over the course of the day. I'm also not going to be doing more than 2 or 3 track days per year I wouldn't think.
If they aren't great I'll look to upgrade when funds permit (yeah right!).
Thanks again guys.