"Best" is an elusive concept, often fraught with disappointment. You might find what is 'best' for you, however 8^). But it would take some time and experimentation.
I suggest you try to conduct the experimentation on someone else's dime, as much as possible. This is often known as "try before you buy." Talk to family members, friends and co-workers. Find out who owns what in the way of shotguns. See if you can arrange outings to the range with them (you buy the ammo, of course, and maybe spring for lunch or dinner too). Get them to show you how the different guns are run and let you handle and shoot them with the light target loads you have provided.
All too often, I get a plaintive response to the above- "But no one I know owns guns, or hunts, or shoots." That's always disheartening to me, but it is a fact of life for a lot of people in America these days. But all is not lost, even if that's the case. Some shooting ranges rent guns- look around in your area and see if such is available. And some gun clubs have rental shotguns as well, and you might even find a helpful old hand to show you the ropes, if you confess your beginner status early and often.
Learning to shoot a shotgun is the first step in being able to use one effectively to defend hearth and home. Don't look upon this exercise as a waste of time- chances are you will learn more, learn faster and learn better habits under the tutelage of an experienced shotgunner than you could manage all by yourself.
And after you get some experience with different makes and models, you will be better able to decide which one among the plethora of suitable shotguns you like the best. That's a lot better approach than trying by buying!
Stay Safe,
lpl
(You don't mention where you are located in your profile. If you go back to the user control panel, and enter your general location, it might just be happen there is a THR member nearby who would volunteer to help you.)