I love Rainer Maria, and i'm not ashamed to admit it. Even though the vocals aren't quite polished, and the music isn't complicated, Rainer Maria will not leave my cd player. Dual vocals match up for an instant , and abruptly leave each other for another strum on the guitar and a yell from karen. This is calm stuff. A lot calmer than other stuff I've kept in my cd player recently: Bane, The Blood Brothers, The Bled.
Its not for everyone, but its certainly for me. I think anyone with respect for personal creativity and soothing words and music will appreciate or respect it, even if they dont necessarily like it.