Blackcat....I have chipped off the edges of my lightened steel ones in a light crash. It's my opinion the lightened ones are not very good. The big problem, if they are too tight, you will break off the hex head on the diff screw. Someone mentioned this was a runnning defect on the lightened ones, they didn't machine the inside flat and caused stress on the head, but I have not been able to confirm this yet. I'm sure AE won't say anything.
I think the older TC3 steel ones are a safe bet.