Once I sell my trailer, im going to be getting a dump trailer or insert. Im not sure what I want. Im moving in the summer so I'd be nice to have a dump insert so I dont have to pay storage. Basically, what I would like to know is can you fit/haul/lift as much in a insert as a dump trailer. Plus with a insert I can get the attachment to make it into a salt spreader. On top of that, what is better steel (doesnt dent as easy but rusts) or aluminm (dents but doesnt rust)?