I have been rocking the Stepchild SC 153 for 3 years now and I love it...it's my favourite board. I primaryly use it for park but it can go anywhere you want (park, pow, groomers). Actually next year I'm getting a Stepchild JP 147 just for jibs....Stepchild make some of the best boards IMO.
But I would think for an all around board I would suggest the 156. I ride the 153 for park and I'm 5'7" and 140 lbs.