Bought a pair of those for my son a couple of days ago for a Christmas present.
Personally, if you're not doing a lot of walking, etc., I like neoprene for cold water/weather hunting. 3mm is plenty for down here, but if I'm standing in 45 degree (or colder) water, gimme the 5mm.
And I've had excellent luck with Cabela's stocking foot neoprene waders. I prefer stocking foot for muddy bottom wading as your boot doesn't get pulled off. My first pair (10+ yrs old) "shrank" a couple of years ago, and my son was using those 'til they shrank on him too!!!
