I just test drove both the ford and dodge 550/5500. Both nice but I liked the dodge better. No idle shut off, less computer stuff. Dodge is built as more of a work truck in my opinion, more steel less chrome. The dodge also has a 2 stage exaust brake which is super too. Cummins engine is the best in my opinion. The dodge was cheaper too. And they gave me a much better offer on my trade by 4K. The people at the dodge dealership were much much nicer as well and they knew their trucks!
Mike