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Build 300-500 wheels per year including LOTS of single speed...

With criteria being hubs intended for cog/lockring or single speed freewheels:

[Sealed Cartridge Bearing]

1. Phil Wood

1a. Paul

2. Chosen A3633/A3735/A3635 M9/M10 and M14 series. (Halo, Velocity, Unknown Bike Company)

2a. The Dura Ace and Record track hubs.

2b. The White Industries Eccentric Hub.

3. Formula (Origin8, IRO, Gran Comp, Velocity), Miche, Suzue

4. Quando DQF series.

5. Novatech (Dimension, All City, SOMA, GodSpeed, Raleigh...)

Despite the bearing end-play right out of the box, I'll take the Quando's over the Novatech's any day. Tired of broken axles, stripped axles, and stripped hub shell threads that plague the base Novatech hub.

In terms of all-around quality, price point and durability and reliability - I have to admit the Formula wins. Probably explains why they're very dominant in the market.

With regular 5-year bearing maintenance, the Phil's and likely the Paul's will last forever...you get exactly what you pay for.