I swear by my Oakley M frames despite the high price tag. The boom (the bit across the top of the lenses) comes in a range of different colours and materials, there are several different lens shapes - I found the "sweep" lens good for a small face - and being Oakley they also come with more lens colours than you can imagine. The lenses seem to be near indesructable - see Oakley's website for the testing they put them through! They have pretty good deals on multi lens sets as well - I got a dark grey lens, clear lens and hard case for around £120. To add to the choice you can also go for Pro M frames (which have fixed rather than folding arms) or even the Lance Armstrong signature frames.... Whatever the choice though I'd go to an optometrist who knows about sports sunglasses (mine's a former triathelete) and can advise you on the advantages/disadvantages of the different lens colours, and who will check the frames to make sure they fit you properly.