i'm a new skydiver, i've got 41 jumps, i look to buy a rig.  My question is: what's the main diffrence bettewen a 9 cell and a 7 cell, and how is it fly under a spectre 170.  I'm used to a saber 2 190, is there a big difference bettewen a 190 and 170.
  Sorry for ortograph mistake i'm from montréal.....