Our 2008 F250 has given us perfect service with our 27 FB SE for almost 8000 miles of towing this year. Never a concern about overloading, sway or power. I am not too happy about the harshness of the ride with no load, so going to a F350 would seem like overkill (I am looking to replace the tires with less harsh Michelins). We do carry about 400 pounds of stuff in the back of the truck for our trips and we do have the crew cab.
Pardon me for asking, but do you have a need for that much truck, besides pulling your Airstream? If so, I could understand your desire to use a 350 to pull the Airstream, but if not, given the initial cost of the TV, and the price of fuel, why would you want something that much more than what is needed?
If you want to go all the way with the TV, why not go all the way with the TT (get a bigger Airstream)? Both have an associated increase in cost; come on now, wouldn't you like to have a bigger Airstream?
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