I guess it depends how you drive! A supra diff will not brake if your into dumping the clutch every other time you leave the lights lol the problem with a quaife is you can lose drive if one wheel loses grip or contact with the road. Grippers are strong diffs and lock both wheels very well but are a bit clunky but its never really worried me with mine! But the biggest problem with 7.5 inch diffs is you can brake the crown wheel and pinion if you abuse them mine is super finished and shot peened and has lasted well with around 500lb ft but I did bust a standard cwp leaving a roundabout in second lol