I personally don't like the look of a stinger, I guess if your going down a steep decline they could save yer butt, but they really inhibit your approach angle (and if on a steep decline and you get light in the rear, you should be hitting the gas, not the brake.)
I simply prefer a Radiator hoop, will save the motor in a roll and is a lot less obsructive. to each his own... Boner Bars Away!!