Short turn - decent to great. We ski 400 vert so it's run dependent.
GS - outstanding all day long. Wish I had 3x the runway.
Freestyle - it was 0degrees, so some painful landings, but still fun and secure.
The short turn takes some user talent but very fluid when you can get into it. AS you know It's a high level demanding ski.
Note, I skied 2021 88's and the short turn was much easier to get into position. The 88s are slightly more forgiving, but I think you give up the seriousness of the 89s which I wanted.. I like the 89's though because I'm midwest and want a serious ski that can handle the midwest groomer, cold, and wet snow conditions. We almost never get pow. The 89 excels beyond most everything else I've skied other than the Brahma 88's.
Comparing the 99's here in midwest would be hard. I haven't done it. I ski Rossi black ops 98s for my mid west all around fun ski and that's good for here because of the double tip and heavier ski with good carving. I also ski an older QST for out west. Both of those skis feel a lot different than the 89 and the 89's to me are so intense and confident I'd feel fine frontsiding the 89's out west as well and then picking a true all mountain 99-108 to cover the western pow where I would suggest the 89 isn't it's highest and best use. Outwest, I would take a hard look at the Kästle 99's out of respect for the ski but I wouldrun them against the QST, Rustler, Declivity, etc...I would think the Kästle at 99 might be great, but not "on top" like the Blizzard's or Armadas.