V-10 all the way. Re-sale on a V-8 4x4 crew cab will be depressing all the way around, no matter which rear you get (3.73 or 4.10, 4.30 is V-10 only). The V-10 is a big motor hardly working, the V-8 is a small motor working hard to do the same job. My truck is 90% commuter, and I'm very happy with the V-10/auto/3.73LS setup. The bigger motor also comes in handy if you want bigger tires. I run 305's on mine with little difference in performance.