I just ended up getting a Outlander Max and wanted to post some reviews and comparisons. I have owned a Twin Peaks and a Grizzly so my comparisons are limited to those.
I am really impressed with the power. It is very linear. I haven't really pushed it as hard as I am still breaking it in. The Kawi motor doesn't have as much bottom end, but seems to have a little more top end (seat of the pants feel.) This may also be due to the weight difference. The Grizzly doesn't even compare.
The seat is very comfortable. The second rider isn't even felt. The shocks are set in the middle and the ride is actually better with two people.
Cleaning the machine is very easy. There are plenty of open areas and it takes me less time to wash it than the Suzuki.
However, the plastic clips on the front end are incredibly cheap for a 9000+ quad. I also miss a clock on the display.
The machine handles better than the Grizzly but will body roll when pushed real hard. I'm not sure how the standard length compares, but it is very good. Everybody that has ridden it comments on the plushness of the seat and the second seat comfort.
All in all an excellent quad.

 

I was also wondering if Prarie tires will bolt up safely to the outlander. I thought I read this somewhere.

 

Taking the front susupension to the stiffest setting made it handle so much better. I didn't hardly experience any body roll at all. This is the best tweak so far. I think it handles as well as the Twin Peaks now, with a softer ride to boot.