If you're technically oriented, and feel safe that your nostr private key also unlocks your funds, then yes, coinos is a good option.

Our experience is that the ability to recover your account by email -- combined with a 2FA device -- is the right choice for many users.

Without that recovery option.. if you paste your nsec into the wrong app or lose it, then you lose your funds.

Again, for technical users this might be an appropriate risk.