I am getting an 18' boat and have been offered a choice between the
two. Both are aluminum but the salesman is pushing EZ Loader which
tells me it's probably the cheaper. However, I'm told, I'm getting the
trailer at their cost since I'm buying a boat from them.

I live in Florida and the trailer will see 75% salt water and 25% fresh
water. Also, should I get torsion springs or leaf? What is the
difference?