-Raving review by Richard Bellars: Penn and Teller FOOLER
You should consider rephrasing that sentence going forward, Marvin...
rave /rāv/ verb
1. talk wildly or incoherently, as if one were delirious or insane; address someone in an angry, uncontrolled way.
2. speak or write about someone or something with great enthusiasm or admiration.
3. INFORMAL: attend or take part in a rave (party).
"Rave" works fine as a good, positive description, using the second definition, as in "Rave review by Richard Bellars."
"Raving," on the other hand - not quite as good, in terms of how it's used, especially in the adjective form, which you are using.
ravĀ·ing /ˈrāviNG/ noun; plural noun: ravings
wild, irrational, or incoherent talk.
INFORMAL adjective: raving
used to emphasize the bad or extreme quality of someone or something.
While it's not impossible to see it as being a positive thing, "raving review" would more often be thought of as an example of a reviewer that is raving, as in speaking like a crazy person. Have you ever heard the expression "stark raving mad" as a way of saying "insane?" A "raving review" wouldn't necessarily be a good thing and would almost certainly reflect poorly on the reviewer, if not the object being reviewed as well. At least, that's how it's more commonly used in American English...