Any good sources for 17" wheels?

[adc]

Just drove home today my "new" Boxster, love everything about it except that on the broken down roads that I call home, the 18" rims/tires don't seem to be doing the car any favors.

What's a good source of 17" rims? I think I prefer aftermarket just for the novelty effect, but the non-turbo-twist OEM wheels in 17" might work too. I'm looking for simple, and reasonably light weight.

Please forgive the intrusion if this question has been asked many times before. Perhaps there might be some board sponsors who can help? I'm coming from the BMW side of things, where there are plenty of reasonably priced, lightweight rims available. Hoping that an be true in Porscheland too...

Many thanks!