I went back and forth about the axle ratios also. I always wished I had 4.30 gears in my current truck. Came down to towing prowess vs better mileage. Last Saturday I ordered my new '17 XLT super duty with 6.2 & 4.3 rear end. I ordered it exactly how I wanted it including the XLT premium package. Dealer says 6-8 weeks for delivery. Can't wait as we have a 2 week trip to Orlando planned this summer. I tow a 9K loaded 36' trailer. Current V10 pulls great and has been trouble free. I bought it new in '06 and currently has just under 72k but the new truck will be my primary driver. Oldest daughter will be driving my daily focus pretty soon.
I was all set to buy a diesel but in the end decided the extra $9k and maintenance was not for me. I agree about the exhaust note of the 6.2. Much cooler sound than the drone of my V10. I just hope it tows as well.