heres my 2 pence worth this is what i think
I have a gripper plated lsd it has been in the car 5yrs and it's full time 2wd all the time
the Quaife isn't full time 2wd it works by alternate but very fast and if you was on track and you had a wheel in the air it sends all drive to the wheel in the air and not to the one thats on the ground..
i have the right to comment because i have used both and i prefer the Gripper over the Quaife
the gripper lsd if you have it set for track use then it is very noisy and worse as the oil gets hot
if you have the gripper set for rd use..... it's noisy at first untill you do about 200/300miles untill the plates bed in then it's like a normal diff no noise or nothing and you wouldn't know that you had a modded diff in your car
most peeps go for the Quaife for rd use
most of all the old skool will go for a platted diff because of it's full time/all the time 2wd
Both units are bullit proff it's the crownwheel and pinion that will break first not the actual units
most peeps think with these kinds of diffs that you just put it in and forget about it
this isn't the case they both need looking at some point in it's life
normaly with the plated diff will need plates/bearing at some point and the Quaife will need the worm gears/ bearings looked at
I have just had mine gripper check over after 5yrs of abuse the top and bottom bevelle plates had broken .. the diff has just had a fresh build new bearing plates and set for rd use it's being built from Tom @ Gripper they guy who makes the Diffs
Marco