I'm not buying into the Pro hype. My boys rode all 3 11's head to head on the DPC and the Pro was dead last on deep snow capabilities. Everybody has different opinion on what rocks.
Lucky for us the consumer, all the manu's are making top notch machines.
No need to buy into any hype, it is what it is. I've ridden cat for 7 years starting with the King Kat. I've owned 5 different m-sleds and feel that both of these sleds were great in their day, but the truth is they are both old news, nobody cares anymore.
The OP is asking about buying a new sled and his choice is either a new pro, or a new proclimb (I have no idea what doo has on the market).
I can't comment on the proclimb, as I haven't ridden it (there is 4' of fresh dump in our mountains right now, it is still snowing today with a break tomorrow, and then another 5' proposed for the rest of the week, where is the new proclimb for us to test????) I know there are a few people that have ridden it, but it wasn't on any type of powder snow condition.
The fact is, the pro works, I don't know what it dyno's at (I don't care mine has a turbo now) but in stock form it had similar power to a piped M8 ho motor (drag race on the road the pro won once and the M8 sp 162 won once, on the steep and deep the m8 turned out, and the pro went over on several occasions, 2 seperate days), the same motor that is going into the proclimb.
If you haven't ridden the pro in powder conditions, you don't know what I'm talking about when I say that it climbs up on top of the snow, you actually feel the sled lift up out of it's trench and it's a different feeling from the old trench, let off the throttle so it doesn't go further down. If the new AC proclimb gets up on top of the snow, then I'm sure with it's industry leading hp it will be a potent contender. Risk a snowcheck purchase now, you might be grinning ear to ear next season, but you might be disappointed (just like I was with my 07 snowcheck m8) or wait until this time next year and buy one once they've been run and proven in the deep snow.
Truthfully, I'd love to be back on a cat, (my close family friend is an arctic cat dealer) I get all my parts at dealer cost, I buy my sled at demo cost and I'm always welcomed with a warm smile when I enter his shop. If Cat pull a pro killer out of it's hat I'll be singing a different tune this time next season. Right now, I'm loving the pro.