onewheelsenuff

Hi, i'm a newbie to this site but been riding for more years than I care to remember. Have ridden sports bikes and now going back to dirt as more fun. So My question is simple and very subjective but would appreciate all contributions: Which bike? Lost track of manufacturers and spec in this area. My only steer on this I would prefer 4 stroke as never been much into oil/ petrol mix and will be using it more for hill climbs, some trails etc so something with some go in it. Many thanks.