Personally, I don't feel comfortable riding around with expensive glasses, considering all the physical risks involved, as well as the risk of loss.

So, I try to keep my budget at < $50.

I've had great success with Tifosi's, also have had a pair of Uvex for about 9 months now and they've been great. Look really sharp and are very durable (I've dropped them countless times with nary a scratch).

They come with interchangeable clear & dark lenses, and IMHO are an excellent value for $35:

http://www.biketiresdirect.com/produ...FQcHnQodYBUAdQ