Hey Fongster,

I fish a lot of water here in So Cal. and the mid west. I went thru a lot of different waders without spending the money on breathables. There is by far no comparison to these types of waders.
I bought a pair of simms guide model hip waders about 4 yrs. ago. They are Goretex and come with articulated extra reinforced knees. This allows you to bend easily at the knees. Very comfortable. And because they breathe you don't get any moisture inside thus keeping you dry and warm. I send them back to Simms in Boseman MOntana once a year and get them ckecked. They will do a pressure check and fix any pin holes for about 20 bucks. I have abused my waders and they still work great.
They are so thin, there is no drag when tubing or wading. You can really tell the difference when you wade a big river like the Henry's Fork or the Big Hole. If you tube at night you can't beat them.