We own a 166g Champion X-Out (Factory 2nd) version of this disc.  I don't normally comment on this, but it looks cool.  Ours is orange and translucent; the brightness is dependent on how much light is shining through the disc.  Anyway, I wouldn't recommend this as a first distance driver, but it doesn't take long for this disc to be useful.  My 10-year-old son primarily uses it and has just started to throw at speeds that are a little too fast for Beast.  Mystere has a nice mild S-curve if it's not thrown too hard.  It has good glide and a predictable flight path.  A lighter disc or different plastic might have a little more glide (Pro and Star plastics tend to have a little more glide than Champion plastics).  If you are experienced and want a maximum distance driver, this probably isn't your disc.  It is a good 1st or 2nd distance driver, though.  Mystere is one of several quality Innova drivers.  I recommend staying away from Innova's DX plastic (general comment, not specific to this disc).  

i got my champ mystere  at a tournament in the player pack and i was super excited i thought it was going to be the distance driver i was looking for but it was just so inconsistent  that after a hand full of rounds i put it back on the shelf.  maybe i should  try a star version.