Regarding Gigabyte, I would like to provide some good feedback.
When Ryzen R9 9950X was about to be launched in Jul'24, I bought Gigabyte x670E Aorus Master Motherboard through amazon to pair with it. But launch of Ryzen 9950x was delayed, and I could not test the mobo till end of Aug'24.
Everything was good but mobo was not holding the BIOS settings, if SMPS was powered off. So CMOS battery was dead in a brand new board. Changing CMOS battery was not an option here, since it involved removal of mobo's back-plate and re-installation of several new thermal pads(poor design, rectified in x870E).
I dug on the issue and found out that many such cases were reported on some of the flagship Gigabyte motherboards, and apparently the issue was faulty battery holder(roaming in supply chain), which were shorting the battery. Replacement window was already closed in amazon.
Hesitatingly, I shot an email to Head of Gigabyte India; enquiring are they aware about this issue? And guess what, head of Northern Region Service sprung into action. After a couple of days of trouble shooting, he asked me to submit for repair, which I declined, citing I do not want my brand new mobo to be torn apart.
So, they replaced the old mobo with a brand new box in face to face transaction at Nehru Place Service Centre.
What I want to emphasize here is that, MD of Gigabyte India, not only took notice of my email, he also kept himself in the loop during the entire troubleshooting and till the replacement occurred.
I also wrote to NVIDIA(Global Head and APAC head) and RPTech(India Head) in this case, but the emails were ignored without any response.