The scissor lifts are a lot stronger, also go with the torsion bar axles over spring axles, its a lot harder to break a torsion bar over a leaf spring. Another thing to consider depending on what type of truck you have 1/2 3/4 1 ton or cab chassis is how much tongue weight your truck can handle on bumper pull, Many of the trucks out there have hitches rated for 1500 lb tongue weight or less!!!!!! An 7'x12 7x14' or bigger dump trailer is going to weight 2500 - 5000+ lbs empty and when you load it up to 10 000+ lbs the tongue weight will becomes a issue unless you have a proper hitch. I had a class IV 1600 lb tw hitch pull loose from my truck it bent the hitch and it cracked, bent and twisted the truck frame. I have been looking for a replacement hitch and have come across only a few 2500 lb tw hitches without the weight distributing bars. I wish I would have know that dump trailers can be Very tongue heavy. Unless you need room in your truck box I highly recommend a goose neck.