Steve, I use mostly Kansas osage, mostly because I live in Kansas...
Not a thing wrong with it, I have found a variety of ring thickness, early wood too late wood ratio, color, etc. Every tree seems to be different, and obviously it's hard to tell ring thickness and ratio until it is cut down. But I have found that it is best to look in a thick hardwood canopy for trees that grow straight.
I have also used Osage from different states; Missouri, Indiana, Oklahoma. I have not been able to tell any significant differences solely based on location.