I agree, I have heard the EZ breaks much "easier", but I have a delima - I have the EZ locker up front and Lock-Right in the rear and I broke the Lock-Right at Disney. I have not pulled the cover to see what exactly is broken, but Im pretty sure its toast. I have a detroit to install in its place.
Morphed - were really are not comparing apples to apples here. Full case vs. drop in. Detroit is the best - bar none when it comes to strength. ARB is a pricey alternative and a close second in strength. Really you should consider these factors:
How often do you wheel and whats your wheeling style? Do you have the gears you want or do you want to re-gear in the future requiring a new case (required if going from 3.33-4.10 to 4.56 - 7.17), it is probably just as expensive to buy a new open carrier and install a Lock-Right as it would be to buy a Detroit in the correct carrier size.
I would say under 38" tires the Lock Right will survive a long time of trail use-abuse. Like I said, I still have not pulled the cover to see what exactly is wrong. Could be a sheared pin or something simple. It still pulls the vechicle down the highway, but it bangs and pops more than usual. On long grades during highway travel, it pulls left and right - pops and bangs.
I bought my Pop-Right used and cheap, same with the EZ Locker. I have wheeled for a year straight on both lockers and never had problems until now. I may skip the future problem up front and buy a Detroit as well.