** Maybe I'm wrong, but I think the OP's intent was to keep his pickup and decide whether to add a dump truck or a dump trailer to his existing fleet of equipment, not to replace the pickup with a dumptruck. However, this was my interpretation of the OP, your's may be different. I would also think life might be kind of rough having only an old municipal 1-ton dumptruck to run everyday errands with.
Man I gotta gets me some new glasses!