Hello, I have a large trail system that spans over a hundred miles and is very hilly. I've been riding a 29er full suspension for the last couple years and I have a fat bike as well. I don't care much about going fast but with some assistance I could do much longer trail rides which would be enjoyable. I've been looking at Bulls with Brose and Haibikes. Seems like there are a lot of 2016's still out there on clearance but I don't want to be updating or regretting my purchase. I want full suspension(130mm minimum travel), decent battery range, and reliability. I kind of like how the Brose powered Bulls bikes hide the motor and battery but that isn't a total must if they have other issues. Budget is around $4k US.