My 2 cents: I think the C43 looks better in some ways (especially quad pipes) and sounds a bit more aggressive. I preferred the M340 in pretty much every other respect. Never considered the G70. I've wanted an M3 forever it seems but it's not practical for Canadian winters. I've had my M340 for a week and LOVE this car like no other car I have ever owned. Almost an M3 (of previous generations) that I can drive in any weather. I know many will slam that notion but that's how it feels to me.
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