If you are looking at good maternal cattle- that will keep you in business come good years and bad- and still produce high dollar angus cattle, I have to recommend these guys- several of which are ND producers ...
The Breeders Group:
http://5barx.com/phpBB2/viewtopic.php?f=34&t=4006&hilit=Glen
I have bought cattle from/traded for/dealt with/ and now have the breeding of several of these producers in my cows after the trainwreck I took a few years ago following the "bigger, better, faster" years of "high performance promotion takes place over everything else" that took place with so many breeders...

I have had few to none for complaints from those I laid out the trades for- and have none personally)...
I'd give 5 stars to long term outfits like Cole Creek, Funk Angus, Diamond D, Whitney Creek, Indreland Angus - plus several others in ND....They aren't in the game to make the "Breeders Bonanza" multi zillionaire bull pimp bull overnight- but to make good cattle over a long term.....
And now I have just as big of calves in the fall -better dispositons -lots better, more efficient cows with less problems, that breed back- than I did a few years ago chasing the performance numbers....
(Made working cows every day fun again)..
Some great "long term" herds in your area- ND, MT, SD, and MN represented- plus some others around the country......Go take a look at their cattle before you make a decision......