I have now had my Summit 800 HO X for a couple months and all I can say is WOW!
This sled has power everywhere. I had to do some tweaking from the factory settings on the suspension to keep the skis on the ground. Hill climbing was a little scary the first ride on the stock suspension settings. The nose was looking up at the sky the whole time but after some tweaking it is much more manageable. In the deep powder, this sled carves it up. It is very nimble and it doesn't take much effort to maneuver this sled.
The only downfall I have found with this sled is that once the air intake filter on the side on the nose fills with snow in the deep powder, the engine starts to bog. So before every chare through the deep stuff it is worth it to make sure the filter is clean before venturing into the deep stuff.
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