Serrengetis for me. I bought my first pair 2 years ago and now have a pair in the car, one in the aeroplane, a pair in my nav-bag and a prescription pair as my spare pair as required by my medical.
All of our pilots receive an issue pair of sunglasses every two years and we have gone from Ray-Bans to Serrengeti, make sure you have the non-polarised version, EFIS screens go black when viewed through polarised specs, and most heavy aircraft have polarised screens which can make the outside world go black. (don't think that counts for night hours though)
SND