Although I have no experience with the RBL, I recently bought a Cabela's AyA "Classic" 4/53, the one with the fancy scratching (a 28 gauge... the last one they had until the new shipment, at a higher price, comes in "someday"). To me the AyA is more visually appealing. It has more hand work (RBLs are machine made and they look that way to me) and a more traditional game gun look (hand engraved and checkered, also nice fit and finish). It does not come with a case, but most of my cases just sit in a closet anyway (you can't fit many in a safe and they get beat up if you use them to take a gun hunting). The AyA has a 5 year warranty, although I don't know what the RBL's warranty is. Take a hard look at them both; which one blows your hair back more? (if you still have any hair; I don't have much).
Joe