I've always liked the R1200S. But if a ST1100 is not comfortable, then he can forget about the RS. Besides the new RR and the R1200S, which of course is no longer made, I'm just not that big a fan of BMW motorcycles. I'm going on almost 150K on modern BMW's and they just dont do a thing for me.
I was given this K1300GT for the weekend and put about 700miles on it. Nice bike, but not worth 22K to me and my normal pillion said my bike is more comfortable. The fit and finish is excellant and I thought the ESA suspension worked pretty well. I think the handling of the RT is significantly better, but this is a very fast bike.