Well after so much back and fourth about getting rid of my 2011 srw truck I finally pulled the trigger yesterday and bought a f350 drw. Way more truck than I needed as it has the high capacity tow pac...
I have a 38.5' 15k lb 5th wheel, I can still look in the mirrors and know it is back there. Honestly my 2011 f250 with the 6.7 and 3:55 gears did fine, it was a crew cab long bad which might have helped, but yes I am expecting a big improvement with the new beast. I did have mixed feelings about getting 4:30 gears as it is my daily driver 70 miles a day November through April. However after driving it I found it to be ok, I wont be doing 75mph down the highway and expecting 17mpg!