It really depends on where you like to ride. The gade is 16"(other makes are only 15") x 137" and is a total blast on the trails, handles great and eats up the bumps really well. It has decent flotation also but in really deep mountain powder you will want to be behind someone on a mountain sled. You can also add a float plate, wider skis and a 1.75" track and probably go most anywhere. I have been in deep powder with mine and it did pretty well unless I let off the throttle or was tentative, then the track would just sink. To be fair though, mountain sleds were getting stuck also, the snow was just so soft and deep.
If you are doing mostly mountain riding I would go with a Summit for sure. They still handle decently on the trail but you'll need to slide the rear end out to hit the apex's

. I wouldn't get the 146" track though, get the 154".