Thanks so much, these posts have really been helpful!
I would probably consider myself an advanced skier (towards the low-middle edge of advanced skiing). I don't really do much of anything in the park/pipe area. Typically, when I'm on a mountain I find myself looking for the powder and unexplored areas, along with that, I do enjoy having the tight tree runs in there. Also, I want to be able to go on the occasional groomers and have my skis perform well, and I find myself liking the tighter turns as opposed to wider ones.
All that in mind, taking into account the very helpful advice from you guys, I feel like the 165's would be best for me probably?