Bowtech joe hit the nail right on the head
these are some of the best ones:

Simms G3 Guide™ GORE-TEX® Waders
$424.95
They are pricey (those are in cabelas--might find them cheaper somewhere else) but their quality is awesome. The good gore-tex breathable kind coupled with fleece wading pants (and your blue undies if a third layer is needed) are great protection against weather in and out of the water. They cut right thru the wind. I would suggest you get to cabelas or a close flyshop and try a couple of different ones on actually. They can vary exactly how they fit between different models. You'll find ones that are really well fitting will be an advantage in the water (especially in heavier or deeper current)
While there are other companies that make quality waders such as hodgman and DanBailey, I would steer clear of the "Cabelas" series. Cabelas always takes them back and replaces but the new ones seem to start leaking as well. I figure the same with "bass proshop" brand.
If possibleI would take and extra pair of cheaperwaders as back-ups. You don't want to let torn waders dictate where you fish.