From what Ive heard, they are all obviously good in powders.
The jj's have a really far back taper so on groomers, if you are using them all mountain, they are going to be pretty squirrely. they also have have a really high rise on the early rise so if you are a fast skier, they might flop a little. although they have a couple issues on the mountain, they are definately great on powder and the lightest and really poppy compared to the other two at 115 underfoot.
the opus skis are going to be your all mountain ski hands down. the way that eric designed it was so that you can go fast without the high rise so it doesnt flop, the taper isnt to far back so they hold and edge extremly quick and well, they have the early rise set pretty well so it is great in pow with 118 under foot, so they are great all mountain. although they are so good, line has a history of making a flimsy ski, even if it says stiff. so if you are dropping cliffs or a heavy guy, might want to think about it.
the hellbents are going to be your backcountry park (as in freestyle) skis. they are absolutely astonishing in powder for the 132 under foot. they have been known to be a bit intimidating for the width but they are only a powder ski. I have heard they are extremely squirrely on the groomers. although they are only powder, they are amazing and will never fail. they have an extreme shovel on the front at 161 so it is just pop pop pop like there is no ground underneath you. if you are an extreme skier dropping cliffs and making back country jumps, these are definately for you. they have a crazy rocker in both tip and tail so you can land switch just as easily as straight. they are also extremely stiff under and have flexable tips for all of those cliffs. If you are an advanced skier who is only looking for powder skis, get these. don't hesitate. seriously. these bitches are fucking badass.
hope that helped some
