DayCab Vs Sleeper

[Chamberpains]

Sleepers add Extra weight to the cab, extra electrical, piping, suspension, personal living items, cabinets all swinging around and crashing up and down all day everyday on the chassis adds to problems.

As for gearing, there is no "more in 1 direction" to go in that makes it better. You have to pick the proper ratio to the RPM range you and your operation needs to run in. Some info on your operation (truck type, gears in trans, weight when loaded and how often, terrain operating in, part of the country or countries you operate in and majority of road type you operate on) and someone on here could probably help you pick a good rear gear ratio.