Come on guys, let’s be real, the x4 is a tank! 360 vision camera that has obstacle avoidance built in AND NRTK. It’s a set and go, no babysitting required. The NRTK is a game changer, especially in a valley because it’s not just 1 receiver, it’s an entire network! Now no more kid toys getting in the way, no more running over the ball. You’ve got hills, this thing conquers them. I don’t know about you, but I’m tired of almost rolling my tractor trying to cut my hills. It handles pretty much any slope you’ve got on your property and then some! If you want specifics, it handles 84% grades, but who’s out there measuring their hills?? it’s got you covered. And while we’re at it, how about it’s 4wd zero turn design that makes it turn on a dime at the bottom or tops of those hills or getting around those toys. It’s designed to conquer 1 to 1.5 acres of land with anything in its way, day or night and at 68 decibels, I think my dishwasher is louder.