Replying to Ski Advice for coming year (done right)

Hello, my name is Jaxson and I ski in the THE PACIFIC NORTHWEST (Oregon) (location). I am an ADVANCE TYPE 3+ SKIER (ability level) that skis everything. but, what I'm looking for in this future pair of skis is a ski that PERFORMS IN MAINLY POWDER and I like (this is what you want out of a ski. I am 16 5'11, 161 (fluctuates from 155-165) pounds (your body type is important) and my BUDGET(!) IS ABOUT 700 WITH BINDINGS .

so, lets recap, to recommend a ski for YOU, I need to know:
LOCATION: OREGON "Bachelor"
HEIGHT/AGE/WEIGHT: 5' 11" 16 161LBS
ABILITY LEVEL ADVANCE TYPE 3+ SKIER
BUDGET 700 WITH BINDINGS
WHAT KIND OF SKI DO YOU WANT: POWDER AND BACKCOUNTRY RIPPER. 

Now I'll give you a little more personal information that applies to my situation. I currently own Line Blends 178cm '09, which I love. I used these to charge rough rough conditions and thought they did amazing. And I also use them as my park skis (more of a backcountry skier). The only area I felt them lacking was in powder conditions. They did better than some of my old skis and most of my friends. But still was lacking. So I'm now looking into buying a bigger ski and widder ski. Currently looking into the Atomic Blogs '11 185cm, and Salomon STH 12 2010. Here are two links for both the skis and bindings that I was looking into:

http://www.summitonline.com/mens-powder-skis/c1000002054/atomic-blog-powder-skis-2011-p233029.html

http://www.summitonline.com/deals/c1000002039/salomon-sth-12-oversize-bindings-2010-p164422.html

Thank you for reading this if you made it all the way through. Any advice is definantly welcome! Main question looking to get answered are:

How do these skis do in powder?

Is my sizing for skis and bindings good?

And is this the best I could do?

Thanks!