Will I regret change to 3.55s from 2.76s

How much do you drive it? Do you want to make long trips?

Here is my story.....
I pulled the 4.10 from my dulley ram to install a 3.56.
Picked up 2 MPG around town with no load at less that 50 MPH.
But towing my trailer at 6K lbs it became a DOG.
If you look at Torque RPM Chart I moved the engine into a shitty point on the curve.
So I put the 4.10 back in.

Think about that.