Dunno about R2R, but does anybody still use MiniDisc?
I have a Pioneer MJ-D707 MiniDisc deck that gets used only occasionally, but the quality of recordings made with it really is remarkably good. I was astonished when I bought it (just out of curiosity), as I'd really dismissed MD as not being a serious format, having only heard it via Midi Systems and the like.
If I record onto MD from my Meridian/Monarchy Audio CD setup, the playback quality is virtually the same as the original CD and on my system, that means extremely good.