The Alpine in-dash changer that I have in my E1 plays CD-Rs of different brands (Memorex, TDK, Imation, Maxell) including the 80-minute CD-Rs (TDK, Memorex).
Rick, if you're looking for a "stealthy" Blaupunkt that can play CD-Rs, try the Blaupunkt Houston. I installed this head unit in my Probe. It plays all of the 80-minute CD-Rs that I've made thusfar.