The one we drive...
Kenworth T-800 out front, 12' box at the rear, with the remaining space in the middle consumed by a custom Bentz sleeper. We are very comfortable when on the road. Well, there is one thing missing... a fireplace. :+
But remember, someone else's "dream" truck may not be the vehicle for you. Despite our relatively young ages we have been at this for a long time and have solid backing in terms of finances, business & technical support.
And we didn't start out with this custom truck, we started out operating Kenworth T-800 tractors pulling super-b train pot belly chip trailers... where the living space was significantly smaller. The whole rig would often tip the scales at 140,000 lbs loaded.