My Symphony I installed showed both station and RDS in the DIS as well as the HU. So I thought the RNS-E would be an upgrade and still have feature, may have something to do with it being a Euro model running US firmware???
haven't installed my RNS-E yet, but I'll check my stock radio tomorrow and see if it displays the RDS data. I think it does, but not 100% sure. And if it does, then it makes no sense that they would exclude it from the RNS-E U.S. software.