I want power in a pickup, not silky refinement. In the real world, the difference in gas mileage between the 2 engines is negligible. As for resale value, my friend traded in his 07 4.7 for a 2010 5.7. The dealer said he would have gave him $1800 more in trade in if the 07 was a 5.7, (not bad for a $1200 option) because as soon as they clean them up and put them on the lot they sell. The 4.7s sit there unless they heavily discount them. It is just a fact of life that a smaller engine will work harder then a bigger engine. I am not knocking the 4.6. I am sure it will prove to be a good reliable engine, but there is a reason that 80% of Tundra buyers opt for the 5.7. If you are going to use your truck as a truck, and tow or haul heavy loads, or go off road in less then ideal conditions, get the 5.7. If its silky refinement you want, get the 4.6, or better yet, an Avalon.Thus for silky refinement, the 4.6 beats the 5.7 by a small margin .