I got my cheapie from a 4wd outlet in Tas (IIRC) via ebay. It was somewhat dished on the inside where it mounts against the guard. I could have filled it with sand and heated it to correct the shape prior to fitting but made a longer stud to be able to start the most affected nut.
Its been fitted since July 12 and doesn't show any signs of degradation.
Correction - It was purchased from ebay not a 4wd outlet.

