WR 450f,CRF,XR or KTM for dual sport

[CR_Racer]

I am thinking about getting a bike to do everything ride to work 15 min, offroad woods riding, and motocross not racing just for fun. I am trying to decide what to get 03 WR 450f ,CRF 450,xr 400 or the Ktm 450 exc what to you guys think would be the ultimate do everything bike? I like the ktm but am worry about the oil Capacity running out on longer dual sport rides.