Hey Jeff
Try something ( regardless of brand/ price) that will do the following:
When you look from the front cover your eyes and your eyebrows
never extend beyond the side of your temples more than 1/2 inch (goggle look)
Try a color/ size that will ballance your jaw :
if your sunglasses are too large/ flashy you will look like ET
if too small you look like an egghead
Once you find " perfect the pair" look at price, if you can afford it then that's it, if not look for something just like it at a lower price
I personally like Serengeti, you can find them for about $80 or less online
Lovethe ones that Patrick Dempsey is wearing
http://www.serengeti-eyewear.com/index_en.cfm
Hope this helps