I have but i do wheel, and have actually seen how effective the LSD really is. Even my buddies were sometimes shocked how the LSD kicked in. So it's either limited slip or lockers I think.Have you considered just swapping in an open diff?
Install cost should be a lot cheaper than a gear change because the shop doesn't have to do pinion depth or pinion bearing preload. And if the open diff measures the same as your LSD, they don't have to do carrier shims or preload either. Literally just swap the ring gear over, press the bearings on, plop it back in, torque it down, you're done.