Dura ace NJS lockrings are like $10 retail. Formula/iro hubs are getting a fairly good rep around here as well. Miche even better. Phil Wood/Dura ace even better.

In that order. I've been riding my bottom of the line quando for more than a year now and it's been fine. If you weigh a lot more than me or really abuse your stuff (Skidding, hop skips and what not) cheap hubs are not the way to go, formula = minimum.

It's a good hub/lockring/cog combined with a good installation + followup and non abuse that keeps things all non stripped and awesome.