I run OME Nitrocharger Sport shocks/struts on my 120 series Prado and I am happy certainly happy with them. Although I can't compare them directly against any other brand of aftermarket shock they are definately an improvement on the standard Toyota suspension.
They handled thousands of kilometres of corrugations on an outback trip I did last year effortlessly, with no fading evident and although they give me quite a stable and firm ride on road they soften up and become nicely compliant for off-road work.
I recommend them, but as I said can't give a direct comparison to anything else, I suspect that they're just as good as any top quality shock available, and better than the standard OME shocks.