I got to take a test ride on a standard transmission VFR1200x last weekend, so I can provide a bit of insight (comparing to my ST1300)... I'm primarily looking for better ergonomics that suit my back better, so the more upright position of the VFRx is what first grabbed my attention. I don't care about the adventure styling so much, but don't hate it either. I'm a long-time dirt biker, riding a XR650L periodically, so the ergos and handling are right at home for me (and at 6'2", the 33.5" seat height is no problem for me). Again, compared to the ST, the engine on the VFR was rougher, not sure why, at lower RPMs. With my passenger, I found acceleration to be more than adequate, and handling was good. It feels much lighter than the ST (and is indeed over 100 lbs. less), though a bit more top heavy. It would take some getting used-to, but cornering 'flat track' style instead of sport bike style will be appreciated. One major plus, at least with a passenger, was the suspension. Over rough stuff (potholes, railroad tracks, etc.), the VFR's suspension was much better two-up than the ST (even with preload cranked all the way up on the ST). My passenger felt the accommodations were a bit cramped compared to the ST, but really appreciated the beefed up suspension.
Overall, I'm on the fence. I was hoping I'd either love or hate the VFR (making the decision easy), but I walked away somewhat neutral. I enjoyed the right and could easily be comfortable on the bike, but it didn't "wow" me and make me want to whip out my wallet either... I don't really care about the lack of cruise control or electronic suspension (seems the be the primary quibbles in reviews) and am really just interested in it for commuting/touring and occasional back roads that the ST wouldn't appreciate.
If anyone else has taken a test ride on one recently, I'd love to hear more about what people think...