Reddington makes a decent pair of fleece waders with stirrups.

A lot of your question depends on your own situation.... How cold will air and water temeperatures be when you are fishing? Will you be moving a little, a lot or not really at all? What is your own personal cold tolerance?

My guess is that you would want to look for something like Polartec 300 or better. If you go on the smaller side of things you may want to supplement with some polypro thermals. Layering in cold weather is always a good thing!