The APEX wheels are well regarded by many people who track their cars on Bimmeforums. There's 10.5" version coming out that will work for our cars with a small spacer. They would work well with the 9.5" in front that they already have.
http://forums.bimmerforums.com/forum....php?t=1496045
I decided to get the APEX wheels (9.5" front/10" rear) since I could get a set of wheel/TPMS/tires NT05) for around $2,000 total, vs. the $2,700 for CCW's or $3,000 for the TE37-SL. Obviously they're not forged so it's not a fair comparison. The D-Force are a good comparable wheel if you have a Brembo kit; I think you'll need a small spacer with them though.
If you're only going to do a couple events a year, you're probably better off just using your stock wheels or getting a set of stock 18" used. If you really want to save your tires, then you need camber plates, especially with PS2's. They have really soft sidewall's and roll over easily.