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If money isn't a problem, you could upgrade to a newer F-150 with perhaps the Ecoboost package. It would provide the same smooth empty ride that you are used to, or better. And empty fuel economy would be superior to your present truck and far superior to any 3/4 ton truck. Many of the F-150 Ecoboost packages exceed your present needs and their towing ability exceeds my older 3/4 ton trucks. And don't forget similar trailer-towing Ecoboost Expeditions if a SUV will work.
If you might upgrade the size of your trailer, then get a 3/4 or 1 ton truck now, by all means.
Wes
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