:welcome: to the forum, i've ridden both, a wee strom alot (friend has one) and test rode a fazer...if it's straightline speed your going for the FZ will blow the wee out of the water, I like to describe the V-strom as a workhorse, it will get you where your going, comfortably, and reliably but theres most certainly faster bikes out there. Now if your looking for maneuverability, the V-strom (for me anyways) was much easier to get used to... it's got a little less aggressive stance than the FZ... Lot's of people on the Vstrom forums use them as long distance tourers, b/c they are very comfortable.
That being said, my Versys is every bit as comfortable as my friends wee, we both agree it's better in the twistys than the Wee...The Wee has a smoother engine than my Versys but i'm used to dirtbikes so i laugh at "smoothness"
However in order to get a Versys offroad capable it requires quite a bit in modifcation (radiator guard, fender extender, anything other than the crappy stock tire) whereas the V-strom pretty much comes ready to go offroading out of the crate.
If your looking to just ride on the road, i'd encourage you to look at the Versys, i've ridden alot of bikes, Supersports liter bikes, sport tourers, dual sports, the lot, and i've never been on a bike (dirtbikes included) that produced the same fun factor as my little Versys (mind you the runners up would be a FZ6 *only ridden once* and the wee strom)
Ok done plugging my bike :spank:
I would go and test ride them, it's all preference really, i may love my Versys but somebody else could get on it and absolutely hate it. My best advice would be don't buy anything until you ride it. FZ6's certainly have private sellers that will let you test ride them, V-stroms have been around a while as well, they just came out with a 2012 model that looks much less like "someone hit the bike with an ugly stick", as my friend with the wee strom says.
*The FZ i rode was an 08, and i didn't notice any buzz, but your in the right place for that question to be rightly answered*
Good luck on your search! Nothing better than riding on 2 wheels!