So you have a 76mm waist ski that you like for those day's. You call your Legends your "powder ski". You also call the 107mm Soul 7 a powder ski.
Here's what I have, my 88mm Kendo (1st year full camber) is my everyday ski, I have the Gotama,106mm ( last year of the full camber) and just bought the Shiro, 119mm (full rocker)
"go big or stay home"
I understand you may not get deep snow where you live.
I skied my Shiro's yesterday after lunch, temps were about 40F, the snow was soft and heavy as spring snow can be, even a little sticky at times. It was my 1st time on the Shiro's. The first run was a groomer to the trees so I could get to the natural snow bump trail. The skis handled fine on the groomed soft skied up snow. In the soft bumps, they would go over anything I pointed them at. Later I took them down the trail the race team trains on. I skied them as fast as I would normally ski that on my Kendo's.
The wide ski felt pretty much the same doing high speed turns in the soft snow. Granted they are full rocker but the tip flap was not that bad, I could hear them slip the snow every now and then but the ski tracked true, even when I dropped my hip in the turn.
I chose the Shiro because it has metal in it and should be good in the heavy powder we normally get in central VT. The reason I looked for a wider ski was because back in Jan, we had 15" of dry powder, my Gotama's didn't have enough float. I wanted more.
I'm a Volkl guy, looked at the Katana but it was only 115mm under foot. I couldn't justify spending money for just 9 more mm. I did a web chaser for Katana's and Shiros, read some reviews on line, liked the fact that the Shiro got lots of good reviews and seemed to always be in the top 5 skis over the past few years.
I skied them today, The top was iced up and didn't open till 10:15. The Shiro's did ok on the frozen groomed as long as you knew not to push them to hard. Beside the soft snow was down about 400ft lower.
I think I liked the Shiro's in the natural crud bumps today over the Kendo's, those skis just go over anything.
It's all about a trade off if you plan to ski that ski all the time. I did bring my Kendo's today and switched back and forth. I just wanted to see how the Shiro's would do.
Hope that help you decide.
As a side note, I did see 3 guy's with Katana's yesterday, not a ski you normally see at Okemo, I stopped and talked to one of the guy's. Turn's out it was his 1st day on them and he got them from the same site I got my Shiro's from. He was having a fun day on them too.