Trail riders who want a Yeti do-everything bike. SB120 is shorter travel; ASR is XC.
Yeti's 140 mm trail bike, Switch Infinity, and a reputation as a traction finder. It pedals better than the travel number suggests and wants to be ridden in the right sag.
Trail riders who want one Specialized and are willing to size by reach. Enduro-curious riders should look at Stumpjumper EVO or Enduro; XC racers at Epic.
The first S-sizing Stumpjumper: six frame lengths from S1 to S6 with short seat tubes, so reach and wheelbase pick your size instead of your inseam. Travel dropped to 130 mm rear behind a 140 mm fork, leaving the longer stuff to the EVO.