I have a K100Rt, love it and ride it alot. No complaints 'except' it sucks on the interstates. The winds really push it around, even when riding two up. I'm considering a K1200LT for a highway bike, but the GF really likes the looks of the R1100/1150RT's. I'm concerned it won't be much more stable on the freeways than the K100 we have now.
Opinions and experience please? And please, be honest about the topic at hand. I know the RT is a fantastic bike, but I want a freeway bike to go along with the K bike I have now.