Hey Dickie,
For the $$$ GHG can't be beat. They look great, the form is correct, but yeah, they have some durability issues, and they are made in China.
All depends on what you want to spend. You could buy G&H - in my opinion the most durable dekes, but they aren't as realistic looking and they are way more $$$. Not sure if they are still made in the USA or not . . . I hope so.
For the species you mentioned, I'd go GHG in a heartbeat. G&H magnum mallards and all G&H divers are pretty darn good - especially if you can buy em used.
Gonna use em on your home turf, too, or just save em for SoDak? If you save em for SoDak hunting only, they should last for quite a while.
Take care,
NR