If you are riding mostly freestyle go a little on the shorter end of the spectrum and if you are more freeride go a little more towards the longer end of the spectrum You may want to go a little longer in your region then their standard park board. Add 2-5 CM or so to accommodate new snow or bigger mountains. Stepchild Pro

Riders are riding the following boards and sizes:

STEPCHILD JP WALKER W/RETT SNOWBOARD 2009 JP rides his 147 on street, 52 in park and 54 for backcountry jumps. He's 5'6" 150 pounds.

STEPCHILD CHAMBERLAIN SNOWBOARD 2009 Simon rides his 153 for street and park, and his 156 for park jumps and his 158.5 for backcountry. He's 6'2" 165 Pounds

 Stian and Markku both, 5'10" 165 pounds, ride the POW SUCKS SNOWBOARD 2009155, CORPO 155 and HAMMERHEAD 156 equally.