The Superhawk and SV1 are pretty similar power wise however my SV always got good mileage on backroads/freeway. 47-52. I could get it down in the high 30's if I rode like a complete idiot in town. Range is right around 120-150 miles for me and I don't push the tank capacity at all.
Between the SV and the SpeedTrip, Damn. I would say go with the Triumph because of the ergos if nothing else.