The revision subtractions are the only pow ski I've been on so I don't really know how it compares to other skis. I can say it comes in a 166 which is pretty good for your height. Also they on sale for 1 more day at 375 so the price right if you are ready to buy now. Also got a kick ass warranty.
There is actually a pretty good argument to make for having 1 really cheap "park" ski, and one really cheap full time Powder ski instead of 1 $800 "do it all" ski. most folks do not ride their skis hard enough to really value "durable" skis that will take a thrashing. It would give you the best of both worlds. All the powder skis ive been on have been more fun and easier to ski than my current all mtn 108 waisted ski which i love. And actual skinny skis sure are fun for hardpack. Revision offers a pretty ridiculous deal- you can get a true park ski and a true pow ski for the same price as the large majority of brands' top level 105ish wiasted quiver killer ski.
That said, I demoed a bunch of skis especially pow skis last year on a perfect demo day- sunny, day after a pow day with a bunch of really good 10-turn pow stashes hidden in steep trees. The ski that was the best of them all IMO was the Liberty Origin. Super surfy and pivot/shmeary in deep pow, really damp and stable but still snappy with pop in chop and powder bumps and it also was a fun carvy ski on hardpack groomers. also fairly light.
checkout Blister Gear Review. I think they are best resource for ski reviews.