I can promise you that reliability is not the same. I have seen that statement made many times in other threads. I don't know where people are coming up with this concept. Since 1997 my rental business has 4-10 600's per year. I'm confident to say I have owned at least 70 600 rmks over the last 15 years. My rentals all go down the same trails under the same conditions on the same days, and for the most part, riding the same areas. Sure the guy who rents the 800 may ride a little harder. Until last season I had never had a single motor failure. Last year I had one loose a crank at 4000-5000 miles. I run all of my sleds to over 7000 miles before selling. Now my 800's typically loose a motor between 2000-3000 miles, although I have a 2013 that made it to 3800 before it went down. Also know of a rental company that ran 6 600's for several years as guide sleds. All of those sleds made it to 12,000 with no pistons or maintenance. There is no comparison for reliability between the 600and 800.