Eric - great advice. Your photos are amazing - any chance I could put a great FX lens on the D90 and get those "medium format" looking pictures you have? (assuming technique is correct, etc.) and assuming I'm an enthusiast - not a pro? Great news about the D90 and Bob Krist. I feel better now.
Lens first - then camera - makes sense. Thanks for the specifics about the lenses.
By the way, I spent @10 years at Emory - orthopedics. Love Atlanta.