So I finally got around to ordering my TX-DS595 today ($359.99 from J&R). While I know that it comes with a snazzy learning remote, I'm really fond of my Radio Shack 15-1994 and I hope to continue using it. Does anyone know if any of the codes for older Onkyo units work for the 595? I really don't want to have to sit there and learn all the buttons (and I don't know how much memory I have left in the thing, although I'm using advanced codes for all but one or two buttons). Anyone using a 15-1994 with the new Onkyos?