I have already posted Harald's comments on this ski. I finally got on mine for two days in Utah. Conditions were mostly light, dry and grabby Utah snow, bordering on Montana hero snow. Mine were tuned with a .5 base and a 2 degree side. I was concerned that the .5 base would be too grabby, but they were not bad in that respect. I think the perfect tune is likely a progressive one with .5 under foot and .7 at the tips (for super grippy Montana or Utah snow).
The ski is stiff. I found out from Heluva that not only does the Pro have the WCR14 plate (their full on WC racing plate) but the E-Race Pro comes with the "long" version which is the burlier of their 2 WC plates. I found the tip area (from toepiece of the binding to the tip) to be stiffer than my Stockli SX skis (which have been skied a good bit so maybe have softened some). If you are going to bend this ski, you need some speed and you also need to get forward, stay forward and nail your progressive CA and tipping through the arc. If you do everything right with some speed, they bend really nicely and the rebound is some serious lift off the snow in each arc (very dangerous if you are even slightly back at the end of the arc). I definitely skied them in a way to reduce rebound, as it its safer, but I definitely had a bunch of arcs where I was getting popped off the snow by a foot. Its fun, but also alarming!
Edge hold is outstanding. I did not ski it on ice, but I'm sure with a 3 degree side and .5 base these skis will rock east coast ice.
It's not a forgiving ski. It will run away from you if you get even remotely lazy with pullback at the end of each arc. On our hero snow in Montana, I know this is a ski I would happily ski all the time (on groomers). I did take it off piste for 10 turns at a time yesterday. They ski fine until you hit small bumps or undulations. The skis are stiff and they will bounce you going over terrain off piste. Probably my last choice as an off piste ski.
But on groomers, they truly rock. As high a performance band as I have skied and again, forgiveness is low. On hero snow, pretty easy and enjoyable for me to ski. Obviously on harder snow they will require a greater level of proficiency.
For those that want a ski that requires one to bring their A game and that will not respond well to less than high level (close to perfect) movements, which comes with amazing performance when skied this way, this is the ticket. Its not for everyone.