I have a lot of experience with "newbie" Jeep enthusiasts and have also run tires from cheapies to expensive. Generally, you get what you pay for.
I've seen Sport Kings and Mud Kings and I guess they are an OK tire. I would have to say that most new Jeepers that have been in my club who want an AT tire, run BFG's. I myself have run them on daily drivers and have gotten 100K miles out of a set doing a 5 tire rotation.
Either way, I think that if you rotated them regularly and kept them up to pressure, the Sport Kings would serve you well.