If your planning to upgrade to a 5th wheeler or plan to haul extraordinarily heavy loads buy the 350. If you sticking with the TT, save the money and buy the 250. The only difference is the rear suspension, axle, front springs. Even that is marginal. Ford can combine both models actually. I tow a 334RBTS with a really heavy tongue weight and bed full of firewood at 70 MPH, don't even know I have a load back there.
Been playing round with my salesman at the ford dealer I buy from, looking at a 350 dually. They are sayin' the 250's bring better resale / trade. Cant figure that out but just wanna pass it down to ya'll. Was looking at a dually to get the tire sway under control. The wife needs to bring everything from the house.
East Bound & Down- We Love Camping :)