Lets say i want to transact a very important huge amount of btc transation of my life. Which one should i chose between Offline signing transaction via Electrum(gpgverified) or trezor bought from official site.
This is a hypothetical question. i want some expert opinion to confirm my bias that offline transaction on airgaped pc is more secure than a trezor.
If you are making that question, it is because you are not comfortable with the technology
They are both safe
as long you understand how to make an offline transaction safely.
As you don't look like a "tech guy", my suggestion is that you use a hardware wallet.
Hardware wallets are designed to be easy to use and safe. You won't make a mistake using a hardware wallet. You will be fine.
u can call me a advanced user. surely i do not understand code though. today i did the offline sign a transaction on an always offline pc which had a clean install of windows 10 with only two softwares installed electrum(gpg verified) and deepfreeze installed. after doing the transaction i wiped the OS.
i want to tell u something and this is on record. once trezor developers were in a ask me anything program on youtube and my question to them was "is it theoritical/technologically possible for a compromised pc to retrieve private keys from trezor while its connected" their answer was yes it possible but with current technology cannot do.
May be one day i will become ''tech guy" and read the code myself and how trezor actually works. And i will get the answer that why inserting trezor on internet cafe is same as safe as signing an offline transaction on a clean always offline pc in an airgaped room.