The main difference between the two is weight. Most 10 ga. guns are 8 1/2 lbs and up, and also with 30" or 32" barrels. You have to take into consideration, do you want to carry a 9 lb. gun upland hunting all day, I know I don't. But they are nice to own and with reloading your own, you get many choices of loads that you wouldl not get in a factory shell.
Good luck in choosing one.

David