I'm moderately aggressive I do ski black runs and am planning on doing that more this year although most of my "aggressive" stuff is done on piste and on the east coast so not extremely steep bowls or anything of that nature. In terms of speed I like to go fast, especially on groomers. I usually straight line the whole mountain in PA (about 950 vertical feet on intermediate to advanced) and like to get speed up north.
I'm 6 foot 180 lbs
I use a 177 cm K2 Apache Crossfire
I have a pretty good range of motion (I'm only 16 so my ankles are yet to be destroyed)
I ski a week in New Hampshire each winter and this year I'm hoping to ski some more but overall no more that 15 days per year, and some of that will be in PA with limited aggressive trails available.
I prefer to ski the side country stuff if I'm on a green trail or a moderate to easy blue run, but I tend to ski the groomed trails regardless of weather when I get to the steeper runs. I also have started to try glade skiing, but if I ski glades it isn't likely that it is going to be anything extremely steep.
The guy that fitted them recommended them for what I just described and I would consider him decently knowledgeable, but after reading things on here I started to question that, so I wanted to get some other opinions on the boot. Also how much of a difference is there going to be in say the worst stuff I ski (moderately hard glades)