So far, the nano 3 is a great miner. So far everything seems to be of really good quality. The power supply, the miner itself, the app, the manual...everything. Feels like a Apple product.
I run it at medium to not push the hardware. It hashes 3.18ths @ medium and it's super silent.
The best part? It's 99$ (without psu). How is that even possible?