I have a 2010 XP550 EPS and love it, looking to give that to my kids and upgrade to an XP850 EPS for myself. Looking at a 2010 with 310 miles mint condition, front and rear polaris deluxe brush guards, 28inch black diamonds on stock take off LE rims, 3500 polaris winch, wes 2up seat from ATV super store and passenger pegs. $6500. I know they added the HO in 2011 or 2012 and not sure how much of a difference that makes in power. I love my XP550EPS and think I will like the additional power of the 850, I had an outlander 800 before and loved the power but not the ride and steering. Thoughts?? Good deal??