if you are looking for more comfort that weestrom , dont even bother...
i switched directly from a dl650 to the fz6 , there are already some comparisons on different threads on this forum but to sum up i could tell you that they are completely different bikes and they are both awesome on their own category....
you will have more power but less torque , 0-60 mph 5 secs vs 3 secs
top speed 110 mph vs 150 mph
comfort on long rides are not even comparable , DL650 is far ahead...sitting position is much more straight up ,,,less vibration on the DL...i should say no vibration probably....
FZ6 is much more fun on twisties and to accelerate....you can actually take it to track days and drag strips...really enjoy the day by competing with supersport 600 bikes...
so 2 completely different bikes ,,its all about what you are looking to do with your motorcycle...