I'm not really someone who notices a huge difference from one sealed-bearing track hub to another. They're light, but a lightweight hub really doesn't matter in the grand scheme of things when it comes to wheels because it's not rotational weight. I like them better than the Phil Wood hub I had before that would slip forward every ten minutes and they've required zero maintenance. They're smooth but the bearings in my Suzues spin for a lot longer when my bike is up in the work stand.