mugener
Rookie
They're pretty close, to be honest. The specs are almost exactly the same, but the K Six.One feels a little less stable, but overall more maneuverable than the RF97. In turn, the RF is more forgiving, but a bit less maneuverable. Again, these differences are relatively minor.
I do think the 2010 BLX actually feels the most like the RF97 to me, though there are differences there as well.
I am thinking of grabbing the rf97 in a very good price