Don't hesitate IMHO.
I'm 6'2 235lb and I'm coming from a VTX1800 and man, I only wish I had known about the FJR 20,000 miles ago.
I had a wicked, and I mean, beyond comfortable setup on my VTX, Mustang Classic seat, 4 inch risers, areomach 'crusin pegs, and I could ride 400 miles without a problem, BUT, I got tired of the heaviness of the bike around town, and the general lack of handling responsiveness I remember from other bikes (Honda CB900C).
So, I rode a FJR. I hate to say a bad word about the VTX, but compared to the FJR it is like wrestling a shiney loud chrome bear versus dancing with an athletic girl who lets you lead but asks you to respect her potential. ( try 'flicking' the VTX)
Now I really think there are only two kinds of bikes, The FJR and everything else, and that includes the K1200GT.
I LOVE my FJR. I'm really enjoying riding again, not just 'cruisin ( which is fun in its own right, but gets old when your hauling around a 1/2 ton ( me and the bike).
I bought my '05 from a gentleman who had the thoughtfulness to put a Russel Myer leather seat on it, tall windshield, highway pegs, 1 in,. risers and a Givi 46 to haul my gear around.
The Fjr requests from you the practice of good posture, and if you slouch or slump you will be penalized.
It is not as comfortable as my VTX for long rides , but I will take the huge payoff in fun factor over the additional comfort.
just my .02