Just slapped a new set of the KBDD 105s on the 600 Pro and took it out for a fly. It has totally transformed the tail of that heli! Soooo much sharper, crisp response, sharp stops, no blow outs (that I can manage anyway). Definitely a good move if you can. Only had one flight and needs a little tweek but liking it so far.
It's rather close to the deck, but no issue on reasonably flat ground. I left my tail blades a little looser than usual just incase
(Please ignore the scummy work fridge. It seems the lads like to get more tea on the floor than in the cups....animals...)