Roughly, your body wight, under 210 sj. Over 210 sxr. From all the guys I've see and talked to.
The 08 and up is deff way tighter than pre 08. it is really hard to get the back of the ski loose, so it is all about your riding style. Do you like your ski to be a little looser or a little tighter? It just take hours on the water. All the guys that came up riding SN and Rn and just LOVED them, they mostly prefer them to the 08, But for some of the guys that were always looking for a little more, they seem to like the 08.