Thanks all for your feedback so far, however I'm not willing to wait 2-3 months for a set of wheels. Team Dynamics apparently needs that long to get me a set and it also appears that the Rota Slipstreams are all out of stock in the US right now in 15x7 (argh!). 18Racing told me 3 months to special order two sets of Slipstreams.

I need 6 wheels stat, preferably 8. Any other suggestions?

I'm almost tempted to just order the darn Motegi SP10s from TireRack but at 14lbs they're not the most exciting choice. Was really hoping to get into the 10-12lb range.