The CT has now done a few miles and a winter, albeit not a bad winter, and I have to say how good it is. The car is comfy, dead easy to drive, holds the road nicely and has much better performance than I expected having moved from a 6 cylinder IS. Economy has been well over 50 all the way through the winter and currently sits at 54 overall with warmer weather still to come.
Downsides? Maybe the boot is a bit on the small side but the flat floor makes loading a doddle and it's easy enough to remove the luggage cover or drop a seat. Other than that the little motor is a real pleasure.