I like the looks of the KW myself. I have never actually seen one of the quad-axle tractors here in Iowa apparently because the allowed gross weight can be met with a conventional triple axle one. Look for my note regarding the walking floor trailers for more about what I mean. lol I don't really know if a sleeper is necessary, but know my Father-iin-law had one on his Freightliner cab-over when he hauled dairy caves from Wisconsin to Florida. I think he used it on the way back. lol gunslinger gary wilcox