Originally Posted by nycom96
How about a lockright?
It really depends on what you need.
I rarely recommend an insert style locker for a rear axle application. They wear out over time and are prone to breakage. Because you retain the factory case, the unit is much weaker than a full case Detroit Locker or any aftermarket diff, for that matter. The Powertrax No Slip is the only insert style that doesn't wear but it's nearly as expensive as a Detroit so why bother?
For a front application they're ok (most any insert style) but they don't last forever. Some people get good longevity while others get very poor.