I've used them for the last 10 years, never had cold or wet feet while wearing them. The pair I have is almost wore out, but I still use them and when they finely go, I'll buy another pair.
You could send them in and get them rebuilt as long as your uppers are ok
I have had them for over a decade and love them. Mine are the Predator Extremes with the calk spikes and they make a huge difference if you have a lot of downed timber to deal with. I can walk right on the downed trees without slipping and boogering up my knees.