Ill speak from experience here. I rode a 154 Salomon Drift Rocker my first season, and absolutely loved it. I was able to jib, butter, and do 3's at the end of the season. However I was an employee of the mountain so I got 100+ days in. If you get the drift, you will have no regrets. I'm 5'8" and 140 lbs and the 154cm was perfect for my all mountain needs.
Only thing i did not like about the drift were the graphics lol. Kind of lame. But whatevs. I had the black topsheet (i think there is a purple also).