I’d say whether a tyre is "good" really depends on a combination of individual driving style, the typical road conditions you travel in, and personal expectations.
One person may say the tyre "grips like hell and ride is smooth as butter", while another person may say it "corners like you're on butter, and ride is noisy like hell".
Bottom line : If you feel comfortable with the tyre, it is probably good enough for you.
If you feel unsafe or dissatisfied, then it's better to change even if other people have good experience with it.
No point driving with this uncomfortable feeling, right?