Thanks for your valuable input. Trezor was my first choice since I intend to move to another wallet rather than the Ledger hardware wallet. But my concern is about secure chips. Since the secure chip stores private keys, I am not sure if the manufacturer could reveal the private keys from the secure chip. I have to find more information about Trezor Secure Chip before jumping into it. I know all hardware devices wouldn't suit everyone since everyone's needs are different. I hope I can have a better solution.