I haven't been happy with the Aeroflow gear, as they are knock offs they are still expensive comparative to the other Chinese no name brands.

As for the Bosch genuine vs non genuine, if you actually get ahold of the supply chain that is also manufacturing for Bosch then you can find the quality for only a fraction of the price.

Completely different product but we use no name brand Bosch power tools from the same manufacturer in China....... There was a Bosch on his desk and a no name 'blank' identical to the Bosch. He said the no name was destined for another brand label. So we bought some and they're just the same.

The Chinese manufacturing industry caters for all makes and qualities. Generally the century old rule of 'you get what you pay for' still applies, however be sure not to get yourself paying way too much.