Because the Superstars normally come in at about 30 quid in their weekly special offers, have been through an astonishing amount of grime, and lasted about the same time as any other pedal my friends and I have tried in crappy conditions. I’ve had mates with v12s, v8s, and vaults all fail in various ways, seen Horizons drop off the axle, Shimano snap axles, etc etc. The only ones I’ve seen that haven’t failed yet are Burgtecs, but, like Chester’s, they’re are out of the OPs budget 🙂
I was also going by the shape, which is admittedly a very personal thing, but I much prefer the platform on my Nanos to the Chesters I tried.
My v12s have needed regreasing as well, btw.