Bottom line: Polarised lenses are good if Tuna Spotting in a 500 (because the polarisation works by removing the reflections from the water). Not so good if the aircraft has glass screens (the polarisation filters out many of the onscreen colours).
My recommendation: Serengeti Driver's Gradient lenses in whatever frames have the thinnest arms. These lenses improve contrast in almost all light conditions (except at night!) Particularly good during 'flat light' conditions as often found in the UK.
Prescription Serengetis will cost you several hundreds of pounds/dollars though and will probably have to be sourced from the USA.
HTH,
B73
Last edited by Bravo73; 9th April 2006 at 18:48.