don't buy cheap waders, they will leak, on the worst day possible, and you will then buy a second pair of waders, do the math, and wish you had just bought a pair of waders worth a darn in the first place. I've worked in too many shops and dealt with too many returned cheapos. Simms is the brand to buy, but they are way too expensive retail. I have had good luck with Cabelas dry plus fabric. I had a pair of Cabela waders last 6 years, longer than anything else I've tried. I'm currently wearing the orvis sonic wader. i cannot comment on durability, but it is without any doubt the most comfortable wader I've worn.
I can recommend Redington for a lot of things, but not NOT for waders. I also cannot recommend hodgman or alans.