I'm just broke my LF Helix 139. Ya, I'm old school. It rode very similar to the substance. What board rides similar to the substance or helix but lands softer? I can't demo so I need some help.
I rode a Substance for two years. I eventually went to the 142 because the 138 was beating up my knees. Try the CWB Transcend. You wont be disappointed. Amazing pop, great edge hold and a super cushy landing. I've never looked back.
I went from a substance to a PS3 - PS3 rides really similar, but heaps more pop, and waaay softer landings. I used to get a lot of knee pain on my substance, but no more on the PS3.