I can't say much about reliability on any of the listed models or give you comparisons but what I CAN SAY is thatI recently when out hunting with a buddy of mine who owns a 2006 Polaris Ranger 700 (fuel inj, 4 wheel ind susp) and that thing is a BEAST!!!...I mean how we didn't flip or get that thing stuck is beyond me!!!!...it runs and handles like nothing i've ever been on. Good luck,I'm also in the market now..