I suppose it's a sign of the times that one considers and M2C and Cayman at the same time. There really isn't much choice in the segment these days. The Ms are multipurpose, the Caymans not so much. While I considered an M2 this go round (wondering as well if it was worth waiting for the M2C), despite some increase in practicality, it wasn't for me. I'm sure the new engine is lovely (I wasn't all that impressed with the N55), but the problem is, the manual is still lugging around 3600#s (1633kg), over a quarter ton more than the equivalent CS. When it became clear that the Competition was gaining weight, by far my biggest gripe with the car (well, that and a 13.7G tank. And the steering, which I just never connected with), the decision was made.
The whole M2 exercise feels far less engineered than the Porsche offerings; more of a convenient collection from the parts bin rather than a truly focused performance car. Regardless, there are any number of reasons to prefer it over the Porsche... lower entry fee, running costs, back seats, not to mention just plain old driving something different if you've been in a Cayman for a while. But, for me, driving pleasure, which really is what these things are all about, isn't one of them. Its all too easy to fall for the newest shiny toy, but, if deep down thats really where the sense of regret stems from, I'd advise canceling the GTS order and sitting on your thumbs at least until we hear what the GT4 will shape up to be. For me, that's the only shadow on the horizon that represents anything for my CS to be worried about.