Hi Old Glory:
I have been skiing and teaching on the Volkl RTM 81's all season and have probably 30 plus days on them. I work at Cannon Mountain in Franconia, New Hampshire, a steep, fast, and often Icy mountain, I've skiied them in pretty much all conditions, so I think I can offer you some educated feedback.
What mtcyclist says about this ski being camberless is not accurate, and it skis more like a cambered ski than not. (The 84 is fully rockered though). I know it says Full Rocker on the ski, but that is a misnomer. The early rise tip rocker makes turn initiation a dream and this ski will do short turns beautifully. And medium, and long. There is tail rocker, but it is slight, and the tail is stiff, so it will spank you if you get back. It is not camberless or reverse camber. My RTM 81's do have positive camber. I can see it. Moreover, the steel layer stiffens up the middle of the ski considerably.
So if I am on Avalanche, the steepest run at Cannon, on an icy morning the edges will hold. And not chatter unless the operator gets behind the skis and the tips start to wander. Trust me, if you are skiing it right, the edges will glue to the snow. The faster you ski, the bigger it smiles.
The ski is somewhat forgiving, but it rewards precision. It is a ski that asks you to stay forward to give its best, and it wants you to lead the turn with your upper body. To get its best, you will have to learn to ski it, BUT it will make you a better skier.
If you were out on this ski on Death Cookies and you were skidding, then you were behind your skis. That's understandable in those kinds of conditions. Who amongst us has not gone off their game in certain conditions?
I teach, so that means I spend a fair amount of time skiing slowly. It does that well.
It may or may not be the right ski for you, I don't know. But it is a great ski. It is the best ski I have ever owned. I've stepped up my game since I have been on them.
I'm 5'11" and 170 lbs, and 65 years. I'm on the 171's and happy. I think Volkl would recommend the 176's because of your weight. Still your call.
Since you are in NH, what hill do you most frequent?