Nanos (especially the Carboncycles.cc £33 version) are brilliant value. That said, I sold mine, because I didn’t quite get on with the shape of them, and replaced with DMR Vaults, which are the best flats I’ve ever used. They spin easily, they’re light, they grip like mad, they’re a concave shape, and the platrorm is huge. Someone will be along to say they break easily – the original ones did. I spoke with the distributor, they changed the design after those first failures, beefed it up where the cracks happened, so you should have no issues there.
I have Point One Podiums on another bike, they’re good too, but I wouldn’t recommend them over the Vaults, even if the price was the same.