So what is the "perfect" width of an East Coast all mountain ski?
...that eternal question. For my two bits, I've been pretty happy bringing my Dynastar Mythic Riders at 90 underfoot on recurring Vt trips to MRG, Stowe, Magic and the like. I retired them last season and am considering my options...
I demo'd the Rossi Exp 98s last year and greatly enjoyed (they ski more like the 'old' Dynastars - separate convo) - but that's probably too much for East coast (my new out west?). I observed many patrollers at Elk on the Exp 78s last season. They all loved them. I've been using similar width at Whitetail, some Head Monster 78s...but those have never touched Vt snow.
..back to my options, I've been eyeing deals on the Volkl Kendo, an 89m ski that's lively as heck, but still solid at speed. It might replace the do-everything Mythics and I push back the next narrow waists until next season.. But if I had to go one size including trips to Vt (or WV), I'd shoot for 89/90. But that's me.
Finally, I recall this question asked of Glen Plake in a Buyer's Guide issue a few years back. His response (as I recall) along the lines of: get something wide enough for your best pow days and knock it down a length to get thru the trees and bumps. Seems wise.