When Harald first demo'd the Peak 84 and the Movement Jam, both times he called me from the slopes and raved for ten minutes about each ski. I think if he had to choose one today he would pick the Jam. I don't however find it surprising that he is recommending some slightly wider skis. He has always loved the IM 78 and he (as do I) feels this is one of the great skis ever made. The Peak 84 and the Jam appear to be very similar except slightly wider. It is getting nearly impossible to find a good all mountain versatile ski with traditional camber in the 78-88mm range. Most have some sort of early rise or both tip and tail rocker. So today if you wnat to find a solid trad all mountain ski you are looking at 85 under foot. There is the MX 78, the Peak 78, The Peak 84, the Peak 90, the Jam and not much else (Blizzard 8.1 and maybe the 8.7 but I think it now has some rocker). Pretty much everything else has rocker.
I am skeptical on the tip and tail rocker flipcore skis from Blizzard. I don't like tip and tail rocker at all and I will need to demo these to see if they have improved on this enough. I have yet to see a tip and tail rocker ski that actually carves when we define carving as being able to bend the tip and tighten the turn radius. Riding the sidecut does not count in my book and no tip and tail rocker ski I have been on comes anywhere close.