You might want to take a look. I have used a pair of Wadelights from Sports Chalet for a couple of years and they hold up pretty well. I picked up another pair on sale for about $60 tax and shipping included. Just in case I needed to wear waders.
http://www.hodgman.com/Wadelitereg-Brea ... 57C69.aspx
Select the Sage color. The photo shows the one with the brown knee patches. All sizes available except Large. Browse their sale area since they also have a bunch of stuff on sale.