I have been testing my Grizzly in the mud and big logs by my pond and on my trails. I got stuck on a log in my pond in the sand that caught my skidplate and was stuck my tires was just spinning so I had to pick up the front end and move it off the skidplate. I went through mud spot right in my pond in front differential lock and just did make it out. It's just amazing what the grizzly can go through with stock tires. I've been looking at the Suzuki King Quad 700 single. It looks like it's the only big bore single than can rival the Grizzly but the Grizzly will always be the best in my mind. It's just not fair to compare twin cylinder bigger bores to the Grizzly 660. Just think if the Grizzly had 2 cylinders it would squash all the big bores.