Read the threads that came up on the search but wanted a fresh view.

Thinking of upgrading the diff in my 2000e. Obviously power limitations etc do not apply. Would like something that will act as a 2wd as and when required - not planning on giving the car death but if the notion to step out would tickle me i would like to know its going to lock every single time (welding is not an option).

Currently have a cosworth LSD but it can be hit or miss if it locks.

Tans-X and Gripper plated are the two I am thinking between - Would they come up for sale second hand often?

Of these which would be the better option? Car is not used as a daily driver.

Any advice welcome, cheers