InvisibleOne
OverANYlander
Check out the new Outpost Offroad / Metal Tech 4x4 bolt-ons. They're having a sale right now, they're normally $450, currently $300.
Those are some nice looking sliders for $300. I doubt I could make them for that. I'm generally not a big fan of bolt on but I like the design of the attachment arms of these units, wrap around attachment and gussets. Those will hold up well.