Diesel --- front engine -vs- rear engine

Yep, but they are totally different animals. Plus many differences between different models. I would say that diesel pushers are usually bigger, smoother riding and quieter inside. Many are built on bus or bus-like chassis. Front engine diesels can be quite big but are often smaller, more compact, turn tighter, built on truck derived chassis, ride worse, can't tow as much, are noisier on the road. Rear engine would be more likely to have air brakes, front engine more likely to have hydraulic brakes (can make a difference with driver's license, as can combined weight of the rig and any towed vehicle). Where I am I need a commercial license with an air brake condition to drive my bus and trailer.

Just my take.

Brian