-
Brand X with the lever is my current favoured budget option. It also has a large 8mm on the thread size so 3 options to remove. I don't like their non lever ones though.
@hippy combination of failure to grease, soft aluminium and heavy washing. The Tripster axles are actually good but haven't been able to find them in MTB sizes. Rondo & Xfusion axles are also particularly bad designs.
What is your favoured replacement. Just helped a friend change their thru axle and the hex section that the Allen key goes into is incredibly thin and alu....seems like it won't last all that long. It's a Prime one I think.