Can't comment from personal experience on Boxster vs. 911, but if you go watch a lot of YouTube reviews of the Boxster, you'll hear a lot guys yelling "I can't believe it. It handles better than a 911 -- this is one awesome sports car!" I think it's pretty well accepted now that the 911 is the luxury grand tourer and Boxster/Cayman are Porsche's sports cars.
Wheels: see attached.
