Ok. Well if you were just asking if Chinese detectors are any good or as good, the answer is NO.
Do they work? Yes, they will find metal. Do they work well? NO.
Will a Chinese detector outlive its Warranty? Probably not if its used a lot.
No one is against Chinese or the concept that a lot of quality items are made in China, Mexico, Portugal, Taiwan, etc etc.
And as you said, they also make a lot of junk as well.
And the junk tends to be reverse engineered products they have illegally copied due to Chinas non existent copyright laws.
I would be very upset if I spend a lot of time designing and developing something, and invested a lot of money, only to have some Chinese company sweep it out from under me. That is why Quality and Branding is a big deal in this world.
So much so, that China has been making FAKE Minelabs, if their machines were good on their own, they wouldn't have to try pass them off as something else.
The proof is in the detector.
No one is upset with you, just the idea that we have wasted money purely due to branding is somewhat of an insult.
If I could of bought a GPZ 7000 for half the price I would have, but that is not the ways things are.