I did some work on a friends new Concours and can say, it is very, very quick however the engine throws a lot of heat on the riders legs/feet (much more than the FJR). With the bags on the Concours, most of the mirrors are useless as 1/3 to 1/2 of the bags are in the mirrors.... My friend had several RT's. They felt very tall to me and vibrated a bunch,(all over the RPM range). Its pretty qiuck but nothing near the Yamaha or Kawasaki..
I currently have an 04 FJR (Gen I) and did all of the heat fixes which did help quite a bit.. The FJR if great for road trips and WILL power wheelie(throttle only), one or two up with just the throttle (Gen II have different gearing-higher top end-less wheelie power/acceleration). With having a lower RPM range than the Kawasaki, there is alot more horsepower/torque down lower so you don't have to scream it to get it moving... Roll on's on the interstate without downshifting will get you into triple digits, real quick and very easliy... The FJR looks good with bags on or off, the kawasaki, BMW and Honda Not so much (in my opinion). I can't comment about the Honda as I don't have any first hand knowledge of that bike...