I wear breathable waders for work as well as for fishing and hunting. I'm in them something like 180 days per season some years, and from long experience have some thoughts.
(1) Boot foot waders stink. They have rotten traction, and in deep sucking mud or wet snow, the boots are loose and will pull off your feet. Stocking foot waders with good wading boots are much better--and warmer too.
(2) You can either buy inexpensive waders and expect them to leak pretty soon and need replacement, or you can pay top dollar and get waders that will be dry for a long time, and that the manufacturer will stand behind. Among my fishing buddies, almost nobody has anything bad to say about waders from Patagonia or Simms--except that they are wicked expensive. Both companies have excellent reputations for customer service, too.
(3) No matter what anyone says, if you dress right and they don't leak, breathable waders are warmer than neoprenes, so long as they are roomy enough that you can really pack on the layers. Late season duck hunting will see me with 2 pairs of long johns and heavy fleece pants, and 4 layers of polypro and fleece on my torso under the waders with a wading jacket over the top. Being a big guy to begin with, I look ridiculous, but I can hunt or fish in comfort.
(4) Barbed wire sucks. So do beaver dams.
I've decided to just suck it up and pay for top of the line waders. I can usually get 2-3 years of service out of a pair before they wear out, and when that happens they'll start with slow seeps that are livable even in the real cold, and with some minor repairs (Aquaseal rules) I can stretch that another year once with nothing but minor and repairable leaks. If they fail before that--and that's only happened once in my last 4 pairs of waders--Patagonia has replaced them quickly and without question. I think I'd probably have spent more going with bargain waders and replacing them more often.