I've owned a 2011 FZ8, a 2009 Speed Triple, 2010 Triumph Scrambler, 2007 MT-01 which I have currently with my 2011 Versys 650. As you can see I like many bikes as long as they are a bit different hehe
The FZ8 with aftermarket exhaust is really awesome, sounds and handles amazingly well, looks good after a few mods, this was mine:
And here's a video with the Yushimura exhaust I installed on it:
Why did I sell it after a 20000km season? Well I Just realized that in order to really enjoy the bike, I had to be revving it all the time which ment I was often WAY over speed limits. These inline 4 engines have decent torque in the bottom range, but they are really only happy above 6000rpm until you hit the redline. Someone riding an FZ8 as a commuter at normal pace, will most likely find it a bit boring.
The Versys doesnt have the power the FZ8 has, but it's got this little je ne sais quoi
If I was to try and do a record lap time, I'd probably pick the FZ8, but if I wanted a fun bike to commute, do some highway, some twisties, some slight offroading, some 2up riding? I'd pick the Versys:
Really they are both great bikes...It really depends on what you're looking for, but personnaly the FZ8 is what tought me that I just don't want inline 4 engines anymore, they are just incompatible with keeping your drivers license cause you can't have fun unless you're full throttle and taking curves above speeds you should be
Let me know if you have any particular questions, I still put lot of km on it (including a 2000+km trip) while I had it so I know the bike pretty well...