1) IME, there are two different design outcomes that handle ice and variable with ice well. First I might call the ice skate feel: Lots of edge feedback, very clearly defined sense of metal biting well into a surface. Very surgical. I'd put the Blizzard Magnums and the Atlas at the head of this list, with Atomic Nomads a close second. Volkls like the AC50 and in a stretch the Mantra still belong, although the former's lost some of the feedback by becoming overly beefy, and the latter is getting too wide to really excel. Maybe neither fish nor fowl. Nordica Jet Fuels and Hellcats also belong in here, although they're more substantial feeling and not quite as much diamond cutters. But they still have that snowfeel. Would Enforcers belong here?
Then, there is the GS approach: Less snowfeel, very damp and smooth, less of a clearly defined groove being created, but more rock solid stability. I'd put Kastle MX's at the top of this group (although FX's may bridge gap between first and second group), also have to include Head iM's (can't speak to new Peaks). Stocklis can't not, although I've never found the middies to be as superlative on ice as the Lasers. Cannot think of any others that scream for membership, although Elans might fit. Not enough experience with middies.
2) I admire other skis that I can't in good faith say I found to be ice picks. Over 80 mm Dynastars, recent Rossis like the Avenger and (maybe) Elan 82's come to mind. As do Fischer Wateas for sure. Doesn't mean you can't tune them to handle ice pretty well, just that it's not their happy place.
3) Other skis just do not seem to want to be on ice, regardless of tune or driver effort. K2 Explorers and Outlaws or PE/Extremes come to mind, as do Salomons and Rossi SC's. These may rock in softer snow, but can be scary at speed on real ice.
4) I'm ignoring indies because in all honesty, the few <100's I've skied did not blow me away with their edge grip. (See 2)
What am I missing, delusional about, will be wrong when the new ones come out, or just cosmically, utterly wrong on? And if you had to pick one ski for this mission, what would it be?