Will I regret change to 3.55s from 2.76s

No real difference in feel between 3.23 or 3.55 gears. Most guys I knew, went for the 3.23 for better mpg and all around enjoyable driving. I always used to drive my cars long distance high speed. Nice not to have stop for gas before 300 miles. Long trips got the 2.76 pumpkin.