I have the Geo bracket. I noticed a difference. Nothing like "Oh my god this cannot be the same Jeep" but yeah, there is a little less bumpsteer and it rides a little smoother. Keep in mind, your brackets will now be positioned inline with, or even a tad lower than the transfer case skid plate.
2013 Billet Rubicon
Ace rock rails, 2.5 teraflex coil lift, AEV Geo brackets, 35x12.5x15 Wrangler MTR's on Mb chaos wheels, Bushwacker flat flares, 12k winch on chopped front bumper, KC windshield lights, rock lights and some other happy crap.