My stats: 215lbs, 5'11, size 11-11.5 boot (burton hail size 11), all mountain rider, not into park (but not against it). I have ridden for about 3 years, this year the hardest and the most. I have been riding a Nitro Magnum Gunslinger 159W because it was free and I wanted to try the wide feel. I think the board is bottom line. Now I am looking to buy. My current options are:
Burton Custom X, Burton Custom V-rocker, Burton Joystick, and GNU Rider's Choice.
I could use the advice of the guys that are in the know!! Help a brother out!!

hmmm, you've narrowed it down to a really solid list. My thoughts: Custom X (go with the wide) -- Insane board, ultra light weight, wicked fast base, deep side cut, rails turns! Really aggressive with a medium to stiffer flex. POWERFUL!!! Custom V (It is a mid-wide waist so your foot size is built for it) -- This board is good for any and everything. From park to pipe to Backcountry, to jibs to steeps to trees. "a quiver of one" is its saying as its the only board you need! Seriously insane! Fast base, light weight, medium side cut with a medium flex. This board is amazing and you can't go wrong with it. ...And its reverse camber so a lil' more forgiving ride and great float in Powder. Joystick (It is a mid-wide waist so your foot size is built for it) -- One of my fav's. Its a twin shape (Custom is a directional) Its a deep sidecut with a medium flex. Meant as an all mountain freestyle board. (I ride my in park) -- really fun! From everything you said I would probably go with teh Custom V-rocker. I have never put someone on that board and they not liked it. The only thing that would steer my in on eof the other directions is this: If you like a really aggresive board go with the Custom X... if you like a twin shape go with the Joystick. All and all, you will not be upset with your choice on any of the above. for sure! Good choices!