personally i prefer medium, but that is probably just to my playstyle... furthermore, i dont think fastest is any more skillful, its purely reaction time, spamming and people feinting more autisticly. i think in a groupfight its all about target switching which does not matter at all what speed it is on...
The only difference i see is worse players can spam and be more effective and it annoys me that such basic spammy players are more effective on fastest... i'm fairly new to the game, so my opinion isnt as valid as others but i thought i would sharbecause people may agree with this view.
Also we shouldn't just change because a few NA's have been shit talking... that's just letting them win. XD