theres a thread like this on Skate perception. you may want to check that out. one thing to note is that the PD has a black and white view finder. however on SP people are saying black and white makes focus and exposure easier to set
The PD150 is the pro version of the vx2k. The PD170 is the pro version of the 2100. The only real difference between the pd's and vx's are the audio inputs. For skiing the extra weight and such might be an annoyance but its hardly noticable. May I ask what price you're getting them for?
------------------------- www.theskilife.com JTS™
Ski_Unit_19 - just tell your parents to lighten up and stop cock blocking you