In Missouri it is a tale of two cities.
On the St. Louis side the strength is in the privates. St. Louis CC has continued to restore it to the CB MacDonald original, after changes made in the 40s by Robert Trent Jones. They've continued to top dress the bent grass to make it play firmer. Old Warson has cleared a lot of trees and the course is much better than when it was ranked a Top 100 in the 80s and 90s, yet now can't seem to scratch its way back in to the Top 200. Bellerive is your typical major championship course renovated by Rees Jones, but not tremendously different from his Dad's design. Under the radar courses like Westwood, Norwood Hills and Glen Echo and Algonquin are great old school courses. On the modern side Persimmon Woods was built in 1998 and is a really good Keith Foster design.
On the Kansas City side the crown jewel is Kansas City Country Club by Tillinghast, who also did Indian Hills. I've heard good things about Mission Hills, while Milburn is a good Langford course that some consider the 2nd best in KC. On the public side Stone Canyon, Shoal Creek are good moderns, with a Donald Ross in Hillcrest and John Kavanaugh's new favorite Swope Park by AWT being some good golden age choices.
Elsewhere in the state Dalhousie in Cape Girardeau, Porto Cima in Lake of the Ozarks, and Old Hawthorne in Columbia have been added since 1999 I believe and are all worth playing.
Finally Branson is shaping into a golf destination dominated by Big Cedar lodge buying Fazio's Branson Creek, and building 2 other courses currently, one by Coore & Crenshaw.
Was thinking of giving Missouri a solid C, but might be a B- considering what's going on in SW Missouri.