I'd say M4,
I like the looks better and had bad experiences with american cars in general. M4 post LCI will be a car to keep for a long time it's hard to pick one without interior pics of the M4 and no specs or pricing. I read in a post a while back that the M4 should have a 0-60 of 3.8 secs now that would be sick.
(a poll would be nice for this thread)
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