We put BMW's baby M Car into battle with the most potent mid-engined Porsche on sale. It's 1-series M Coupe v Cayman R, with Chris Harris presenting on video below.
The vital stastics? BMW - 335bhp, 369lb ft, 0-62mph in 4.9sec, 155mph top speed (limited), £40,020. Porsche - 325bhp, 273lb ft, 0-62mph in 5.0sec, 175mph top speed, £51,728.
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A few differences, then, but these are both hugely desirable two-door performance cars. Whose array of talents appeals most, though? Find out here...