Not posted on this site for a few years so good to be back.

Just back from completing the Tour du Mont Blanc and already thinking of my next walk. I figured it's about time I got my act together and planned a C2C for 2012. Now I am sure that this question has been asked any amount of times and I'm being a touch lazy by not looking through previous posts, however, I'm keen to hear what others consider to be the better/preferential time of year to complete this walk?