I am sure you have seen more Nexus7 hubs than me but I (we) use them a lot and currently we are using 7 different hubs. Aso had several others on my hands that I passed on to friends. I have done some few repairs but mostly just cleaning and lubing. In the next month I am going to lace up a new Nexus7 for my favourite 20" folder and is also thinking about a dyno/rollerbrake front hub for it. Bulletproof and easy.