I was in pretty much the same situation as you at the beginning of the season. 31 yrs old, 200 lbs (I lost 25, so now 175), mostly freeski w/ some limited course. I was skiing a 66 Concept and got the 67 Coefficient X SL. The switch was incredible, the Coex SL is faster, more stable, better in the turns, etc. I am extremely pleased and can't wait to ski after work each day!