I'm pretty sure I have a 23 gallon tank and I know I have the regular 5.7 (no E-Torque). My range unhooked (not towing) is ~380-415 miles. I have been averaging high 17s to low 20s for economy... We overland a bunch and often find ourselves very remote. Anything with a 400 mile range is usually sufficient, but I do carry extra fuel when overlanding (13.5 gallons). So, even with the the smaller tank on the truck my total fuel capacity is more than 36 gallons. I have never had to get into my last can (Even in Alaska) but I do plan my routes carefully.
I personally like to split my fuel up a bit. My truck isn't a daily driver, it's life is either to pull the Jeep, or for leisure exploring. Since it sometimes sits in my shop for weeks, I don't like a bunch of fuel sitting in it. Anything with Ethanol will draw moisture and simply doesn't last as long. When my "extra" is in Rotopax jugs, I can put it in vehicles that I run more regularly and not have it sitting around.
If you are using your Truck as a daily, I can't imagine a 23 vs 26, or even a 33 making a huge difference.
Side note: I think the larger tanks are deeper, which would sacrifice ground clearance. I have nothing to substantiate this beyond the two inch gap between the tank skid plate and the actual tank. (A winter project I have is to tighten this up a bit.)
Anyway, I know this isn't exactly on topic, but I thought I would share since I have very real world experience with range needs and other ways to tackle the issue.
Hopefully you all had a great Gobble-Gobble and I wish you Happy Holidays.