Some rear kitchen models are better than others. Make sure you look at all the variations.
Our is an 'RK', but it has countertop across the entire rear, and a good sized picture window in the rear wall. Lower cabinets across the entire rear. Sink is in the corner, range on the side wall next to the sink, then the fridge over the axles. Barely qualifies as a rear kitchen, but that's what they call it. And we love the layout. More storage than mid-kitchen models. And no, we do not have any issues with things jumping around.