If anyone is contemplating a move to SD, you better bring your money with you, because you won't make much here. I left a Fortune 500 company to come back to be with elderly parents. They are now gone, but the struggle to survive in today's economy continues. For retirees on a pension, or those with Gov't jobs, it would be OK.
For those that think living in bird country means all of your neighbors will let you hunt their property gratus, think again. The state has turned into a pay-hunt mecca in the prime bird areas.
The oil patch in ND/MT area is hot for workers now, but you will live in a trailer and work long hours. At least the pay is good. The low taxes and gobs of public land make WY the place to live.