I have to say overall around the country IMO Morton's is the most consistent. I have not had good experiences at Ruth's Chris at all, and I don't like the exorbitant amounts of butter they serve steak in unless you ask them not to.
Fleming's is one of my faves but I have only eaten at them in California, Newport Beach is awesome as is La Jolla. Free fact, Paul "F"leming of Fleming's is also the F in P.F. Changs...