As stated above it’s really about personal preference and how the truck is used. Does it need to be practical or will it just be used for fun. I have a Honda CRV for driving in traffic. For fun my truck has a 350, Super T10 4 speed, and 4.10 rear gears. I wouldn’t enjoy driving the truck in stop and go traffic at all, but I'm retired and it sure is fun for blasting around locally. A low rear end gear is only a poor choice if it doesn’t match your needs. Mine is well suited for the application since the truck rarely goes on the freeway.