Replying to New skis but which ones...

First off this site seems pretty dope. Now down to business:
Last year I skied about 20% in the park and about 80% steep groomers, and glades. This year I want to get better at skiing the park. I've skied for 11 years but not too much in the park. I'm 16 yrs. 5'10'' 150 lbs. and I'm a pretty good skier and will do almost anything. I can hit the big jumps and do nose and tail grabs but no spins yet because I haven't had twin tips (I ski Fischer RX8's mostly). Anyway this year I'm looking into some twin tips exclusively for the park and occasionaly in the deeper stuff, I don't care how they are out of the park because I don't need them out of the park. I'm pretty set on Fujatives but I'm not sure what year to get. I can get 05's 06's or 07's. I heard the 05's were more flexible/soft and they are cheaper but I don't know how they compare to the other years models. I want they ski to be very flexible for butters but also be able to do rails and be easy to land big jumps/cliffs. What is the difference between the 3 differnet years I listed?
Also are stiffer or softer skis better for:
-butters
-landing
-rails
-getting to the park (chutes and some grommed)

Now on to bindings. I think I'm going for the Look PX12's or some Fischers. I want to spend no more than $500 for Fujatives and bindings hopefully less. I can get Fujatives for: 05-$230 06-$260 07-$330.