Not something one should brag about online: every bit of information you spread about yourself ease the work of any future attacker.
A better question would be: "what kind of password manager you recommend?"
To that question we can answer without revealing so much about us (except maybe good technical skills).
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As for the matter I suggest you to keep the 2-3 most important passwords/private keys in your mind AND printed in a safe (just in case you forgot them or you die and your family need to gain access to the protected data).
As a second choice (or for the second most important keys), you could get a dedicated device to always keep off-line, with an off-line password manager.
And by "keep off-line" I mean that it shouldn't even have an ethernet, a SIM or a wifi ever enabled.
Finally for less critical passwords and keys you could use an off-line password manager on a less trustworthy hardware, such as your personal laptop or your personal smartphone.
NEVER use your work laptop or smartphone and NEVER EVER use an ONLINE password manager, not even on a hardware you control as your attack surface and threat would explode.
