I have bent two lockrings in hub-stripping incidents and recently (to avoid my girlfriend suffering the same fate) tightened up the lockring on her bike. Which broke open, at the notch, while I was tightening it.
You can get away with Formula / System Ex / generic hubs if you have a decent lockring and install it with plenty of grease / elbow grease.
Definitely get a good lockring.
I have bent two lockrings in hub-stripping incidents and recently (to avoid my girlfriend suffering the same fate) tightened up the lockring on her bike. Which broke open, at the notch, while I was tightening it.
You can get away with Formula / System Ex / generic hubs if you have a decent lockring and install it with plenty of grease / elbow grease.