Best Towns - NW Ark To Texas Panhandle

We are currently in NW Arkansas (near Fayetteville) and we are planning to travel to the Texas Panhandle next. What small cities or parks have you seen in the area between here and that that you recommend we visit? We are planning to first stop at Eureka Springs which is near here. I've read it's beautiful. Then maybe Brannon, Missouri, then start heading towards the Panhandle. We could swing through Kansas or Oklahoma; we haven't seen much of either.