At idle I prefer the Audi sound, but the 718 sounds so much more "purposeful" once it's on the move.
I've ordered a base Boxster 'cause I loved the handling, which I can use, rather than the "foot to the floor" acceleration, which would undoubtedly cost me my license!
I also find the Audi appearance rather boxy and unattractive. I've never looked at one and said "I want one.".
Greg