Cone VS Clutch?

The reasons are more important to me than the reputations. I voted clutch, but my real "best" would be niether. It would be the Detroit Tru Trac. Buy it once, and you'll never need another (unless you like mutiple gear selection...lol).
Limited slips are designed to be non slipping in an "unloaded" state. Unloaded means the car is not turning. Speed has no relevence, either the vehicle is turning, or it's going straight. When a vehicle turns, the outer wheel (meaning left side wheel if you're turning right or vice versa if you're tunring left) rotates faster. The outer wheel has to move a further distance than the inner during any turn. As a car turns, a certain amount of sideways force is transmitted thru each axle. It's that sideways force that compresses the springs and "loads" the differential. A loaded differential will allow the inside wheel to turn slower without slipping the tire on the pavement or breaking an axle. The type of friction material that is used is the key. The friction materials are either under spring pressure and touching (unloaded condition) or under pressure from the axle (wheel) and not held tight (loaded condition) at any one time during driving.

Cone types were always made by Auburn do work... ok. However they use a cone shaped steel piece and a cup shaped receiver as frictions. Because of that they are slow motion hand grenades from the factory. The surface area for grabbing is very, very small in comparison to clutch types. As they are loaded and unloaded during driving, the metal on metal produces a fine glitter of steel particles. (Remember that while there is oil present, while driving it is thrown off the components, and the parts are being constatnly pushed together.) Those particles wear the gear surfaces, the bearing surfaces and rollers, and each time some is worn off and the cone digs deeper into the cup, the preload from the springs becomes weaker. They can be rebuilt, however after resurfacing the wear surfaces and cutting them ever shorter, you have to use shims to make sure the side gears mesh properly. Most "rebuilders" don't do that. Any rebuilt cone type IMO is junk, adn the new ones will be in short order, especially if driven hard on road courses or twisty local roads.

Clutch types use a series of clutches and steels, so the real heavy wear items are the frictions, and the residue from their wear doesn't contaminate the other parts. Not to mention having about 8 times the surface area to provide friction when unloaded.

The Tru Trac uses gears. No wear items, and no slipping. but, it behaves much like a spool when you're on the gas hard.