The FJR is very swanky modern and new, so will behave just like that. It's also fast, spacious, well-behaved, feature-laden and a proper Sports Tourer.
By all accounts, it's much harder to work on, needs more effort and jiggery-pokery, the rear suspension linkages require a great deal of correct attention (Yamaha themselves don't do this properly) and is a bugger to do alone, a lot of the gubbins are electric... not something I'm that sold on, personally, but a lot of people like them.
However, the FJR owners (on the same forum, naturally) are just as enthusiastic and Ernie at the FJR Centre (obviously connected with Doc, god of everything FJ) is the best in the business.
Beyond that, you'd have to try each one out for yourself, see which you were interested in. Maybe hop on http://www.fjfjrbiker.co.uk/index.php?action=forum and chat with the riders there.
All I can tell you is that the FJ1200 will NOT disappoint!!