Dude, no reason to be a track snob. Best example I can think of is accelerating from a dead stop into traffic making a right or a left. The standard open diff will take the least path of resistance and send all the power to the wheel with the least grip. Then the nannies kick in and put the brakes on the spinning tire to get some power to go to the side with the weight on it. While all of this happening traffic is moving at you. Now with the LSD this doesn't happen. Now put a little water on the road and it takes even longer to get going. All the power in the world mean nothing if you can't get it to the ground. I run P Zero Neros and straight line traction was never an issue. IMHO 'The Ultimate Driving Machine' should come with at least the option of an LSD in every model, not just the M Cars.
2006 330i e90 JB 6MT ZSP ZPP AA Wavetrac