IF those are your two choices go with the FZ6.
However, I would go with a VFR more comfort and power and fit. I fit on them well.
Now What I am actually getting is a BMW F650GS which is a Toned down version of the F800. Note 650 is not the cc it is actually 799cc. Only thing to change is the seat to make more comfort and when pavement ends I can still ride. Plus all the farkles one can get for them.
Down side service is costly. Seating is more upright as well compared to the other choices.
In the end buy what suits you and your needs.
My choice is an addition not a replacement to any of my bikes. Picking mine up in Jan 1, 2011 or around that time frame.