Thanks for sharing this useful information. For a year, I only use MEW. but some time I had some error, failed transaction, etc.
I will try your additional ERC20 token wallet, mycrypto.com, but what your experience using mycrypto.com? is it better than MEW?
MEW has gwei in the transaction as a gas limit, if you use MEW with gwei settings below standard then you will always experience problems in the transaction, namely failure, please set gwei 40 to 41 then your transaction does not experience problems