Here's a short write-up I did in the ICE section:
http://www.audi-sport.net/vb/satellite-navigation/194394-rns-e-mk-i-rns-e-mk-ii-comparision.html
http://www.audi-sport.net/vb/satellite-navigation/194394-rns-e-mk-i-rns-e-mk-ii-comparision.html