Just had my Concours in for the 7,500 mile service AND front brake rotors because they were warped. I have recently purchased a 2012 ZX-14R and a brand new 2009 ZX-6R. I tell you what if I didn't have the other two Kawasaki's I would had missed the C14 terribly. I did miss it, but had other nice bikes to ride. I dropped off the 600 for it's 600 mile service and picked up the C14. When off it for a week or so you really appreciate it that much more once you get back on it.
BTW I also have a 2010 BMW R1200GS, it's a great bike. However, I don't like a sport touring bike (such as the RT) with a boxer twin - any twin for that matter in a ST bike. It just isn't pleasant when compared to a powerful and smooth running C14. At one time I was considering an RT, so very glad I didn't. Great bikes, but a sport tourer needs to be (IMA) smoooooth and powerful - like a C14, FJR, or ST!