I acquired a brand new set of Ken MTN extreme 400's here recently and have not worn them yet. I do a lot of coyote hunting in cold temps. do those of you that wear KEN think it would be worth me selling the 400's and getting the 1000's or is it not worth the hassel. Or maybe neither will be warm enough for sitting through a stand for 30 min?? Your thougts? Thanks for the input..