I agree with RidePowder about the length. I was looking at some of the longer boards (I'm 6'0, 210lbs, size 11 boot) and I ended up going with a 164W. I checked out a 168 before buying my deck and it was just too big for me. To tell you the truth, I could have probably went a little shorter than the 164, but I plan on riding a little pow and wanted to make sure I could pull it off.
When I was prowling the forums doing research on buying my new deck, I got annoyed with all the responses saying "buy what's right for you", but after going through the process, the people saying that were spot on ESPECIALLY when it comes to buying boots. Good luck!