For you guys in the roll off busyness. Is there a particular spec you use when ordering boxes? Is there a manufacture of containers that is better then others or do you just buy whats is cheapest? I have received quotes from about 4 or 5 manufactures around me some are pretty close on price but shipping is what separates them. Some have different specs so it is not an even choice. I am getting into the carting busyness and would appreicate any help and info.