I personally would recommend ATX Slabs or Chamber Pro II's as they not only have super thick rings, they also have recessed bolts and bolts that are a bigger/stronger than their competition. Another thing they have going for them is that when installed, the rings sit metal to metal instead of just sandwiching the rubber tire and that helps to prevent bolts from breaking.
Spyderlocs are made by ATX and are exactly the same as Slabs minus the star in the middle and while I have run them in the past and liked the way they look, I found the stars to get hung up on rocks and roots and once they get bent in, they throw off the balance of the wheels.
I have run Walkers in the past and love the way they look too but, they have thin rings, small bolts that tend to break.