Yeah, flour is an amazing thing! So many variations and so many disasters if you aren't careful!~ LOL
A lady I have taken some bread making classes from teaches home economy at Oregon State University. This means she is available for 4-H and extension workshops. Since she loves to bake she is always willing to come give the kids and leaders some help. She is from Montana and every summer she visits her family and comes back to OSU with enough flour to get her home ec courses through the first term. She stocks up on every kind, she and her hubby load it in the back of their big motor home and bring it back. I've sampled her breads and pastries, they are wonderful. Partly I'm sure cuz she's an awesome cook but a lot of credit goes to good ingredients.
Try,
http://www.wheatmontana.com for some good bread flour and other interesting grains.
http://www.montanaflour.com has good info about Montana flour.
These sites all seem to be focused on bread, but I know this lady used it for cake and pastries. I'll see if I can find out more about what she uses.