no personal experience but there is a Boxster in my area w/ those wheels. He's had them for 2 years now and they do look pretty sharp. Roads aren't the kindest around me either so you can infer they hold up decently too. I wouldn't be too afraid of something from tirerack as they have a nice reputation. You might have a challenge finding p-center caps but I'm sure they have their own available too.
Good luck
