Sport specification sharpens the IS, but can't raise it to the level of communication offered by the BMW 320d. The bigger wheels hurt refinement a little, too.
The Brooke Double R is cheaper than a Caterham CSR, just as quick and a huge amount of fun. Offset pedals are the only downside - apart from the lack of a roof.
The Sky isn't quite as agile as an MX-5, but its ride is better and its engine torquier. This bodes well for the Europe-only Opel GT, due for launch with 260bhp next year.
Slotting a 6.2-litre V8 into the CLK results in a car that's faster to 60mph than a Lamborghini Countach, but the Merc doesn't involve you in its huge capabilities as a 911 would. And a Carrera S costs the same.
