I live in the Northeast which is where I ride mostly and do 1-2 trips a year to Utah and CO. For the previous 150 days I've been riding a NS SL 158. I'm 6ft 165# size 11 k2 UFO boots
I absolutely love my SL. I have total confidence to ride it absolutely anywhere. From east coast ice to 2feet bottomless days out west. So when the Snowtrooper is advertised as a better SL, I had to have it.
I just returned from 4 days in Vail. We have 8inches of new snow overnight, 1-3 the second day, and bluebird groomers day 3&4.
The board has noticeably more pop. Because of this, it feels more fun to jump around and on and actually feels "lighter" on your feet when riding. The board seems easier to spin due to reduced swing weight and is easier to ride switch than the SL. It feels more stable through late day chop and at speed. It is advertised to float better in powder which I tested thoroughly, but couldnt tell any significant difference between the trooper and the SL. I never had a problem with float on my SL.
Went during late afternoon/dusk to purposely find some icy, hard pack snow to test out my Snowtroopers edge hold. Went to Mountain Creek, NJ and was riding my Snowtrooper 159. Conditions weren't pure Ice, but very hard packed, skied off with a dusting of the manmade on top.
I hit every trail at least once and the Snowtrooper never washed out once, heel or toeside. It seems to be the same edge hold as my SL which was great.
The matte top sheet is a pretty cool addition.
In conclusion. I think this is a slightly better SL. More stability at speed and blows through late day chop with no problem. Edgehold is great.