Praline, on review, is incomparable (9)
I believe the answer is:
nonpareil
'is incomparable' is the definition.
(similar in meaning)
'praline on review' is the wordplay.
'review' indicates anagramming the letters.
'praline'+'on'='pralineon'
'pralineon' with letters rearranged gives 'NONPAREIL'.
(Other definitions for nonpareil that I've seen before include "Paragon" , "beyond compare" , "like none other" , "Super model" , "Eminent beyond comparison" .)