Heres some more R-09 sample recordings you can check out. I just put up on Archive.org 24 recordings I made of the 7-4-06 Rainbow Gathering in Colorado. All acoustic recordings with the CMC-4(AT 853) worn on my glasses > R-09 (44.1 kHz, 16 bit) and no battery box, using mic in low setting.
http://www.archive.org/details/2006_Rainbow_COIf you only listen to a few, get the first 2 songs. On many of the songs there were about 15 musicians and the soundstage came out great, there was an upright bass, 3 guitars, mandolin, hand drum, violin, sax, lots of vocals, and you can hear the position of each. I really liked how easy to run this was in very primitive conditions camping out for 5 days.