There are 3 different trim or option levels from my understanding when we bought our SE this past spring. The Sportsman, the Queen Classic and the Queen Classic SE. I do know that like 54suds said, one of the main differences is the windows on the Sportsman are sliders and not Dometic Seitz thermo-pane.
Another difference is the rear bumper on the Sportsman and the Queen Classic are just a small bumper and not the one that extrudes out the you can actually sit or stand on. The oven and TV do not come with the Sportsman and QC either.
I think what you would have to do is a comparison of what is standard on each model and determine what fits your needs.
When we bought ours I looked at just getting a Sportsman and then adding is the options we wanted. At the end of all that, we were within $1200 dollars of what we could get an SE for so that is what we went with.