As I recall, kokc (then koma) aired Clark Howard for a while live from noon to 3pm - until they added O'Reilly. His show is fairly similar to Dave Ramseys, except its intended for people with FICO scores above 600. Although, I know Dave has an appeal amongst evangelical christians, which may make him more popular than Clark Howard.
I think a lot of Boortz fans in OKC listen to him live on KRMG in the mornings, which comes in quite well down here.