C-DAWGSTYLEZDon't matter none
http://www.youtube.com/watch?v=CB8Ha2BbZh4
That was amazing.
Graham.That was dope. Off topic but damn
Definitely not off topic, he slayed those rails on 127 underfoot noodle soft EP pros.
To the OP there is a lot of not great (i suppose that is my opinion) advice in this thread. You're going to Japan, like you said you want a fat ski. Blends and the other mid fat options are not going to cut it in snow that deep. Most fat skis will ski fine for the few days of park you'll do. Sounds like the park isn't that great and you'll want the width much more for the pow than you will find it an issue in the park.
To be blunt, if you aren't very good at skiing, fat skis make park skiing seem hard. It is harder to learn new tricks on big skis but if you can do them already (as the above edit shows) you will be able to do your tricks just fine. The one issue you are going to have is that most pow skis have thin edges, so if you plan to ski rails, I'd avoid skis like the JJ, Bentchetler etc as the edges could well break.
Line, K2, ON3P (off the top of my head) all use the same edges from their park skis on their powder skis, so I'd go with one of those. I think my choice would probably be Pettitors or Opus for really deep days and the occasional park lap. I've never skied ON3P so can't comment there.