Which LL version should I consider?

[bluzeo]

Well for me . I try to keep up with with the project . For older machines though. You said it 3.2 . Then go to 4.0 for a lil bit. See if you hardware can do the distro  slightly older newer version.  Secondly secureboot / UEFI is sometimes better to keep for layer security but I would advise taking it off.  Cause it hinders the system somewhat.

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