In my experience professionally building multiple rigs, particularly rock crawlers, Fox is a top-quality product! Your Fox shocks can be rebuilt as long as the body or shaft is not damaged. They can also be valved to adjust the rebound and compression of the shock.
But if you are absolutely determined to replace them, we do have a local company called Arizona Desert Shocks and they make premium products. Although they are pretty spendy, they are race-proven in the harsh Arizona conditions and are worth every penny.