Better than good (4)
(Other definitions for best that I've seen before include "The most talented" , "To the highest standard" , "Optimal" , "Most outstanding" , "12 21[FOOTBALLER" .)
'better than good' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for fine that I've seen before include "nearly in line with wicket" , "Excellent kind of monetary penalty" , "Money penalty is clear and dry" , "Acceptable - punishment" , "Money paid as penalty" .)