Looking for wisdom from those here who have ownership experience with BMW's RT and either Indian or HD touring offerings. I have owned both the R1200GS and GSA but I am now looking for a more road biased touring alternative with better long range comfort and am leaning towards a new water boxer RT. I don't however wish to eliminate American V-twin alternatives (electra glide or chieftain) without doing my homework first. I have done the HD dealer test rides but find them pretty useless to determine what it would be like to spend multi-day 8-12 hour rides on - maybe the next step is a rental. Regardless I'm looking for opinions on what the more feet forward design of the U.S. bikes does to one's back and hips after extended seat time compared to the RT seating position. I realize that the BMW's are in a different league altogether when it comes to technology and performance. All opinions good, bad and indifferent appreciated. Cheers.