I think the Persona 3 manga is good. It has an interesting premise and the illustrations are top-notch. There are some minor flaws, but they don't overshadow the overall quality.
Persona 5 indeed has a manga. It retains the core elements of the game while presenting the story in a visual format that suits the manga medium. Many fans appreciate the manga for its unique take on the familiar Persona 5 universe.
I don't have the exact details on how far along the Persona 5 manga is at the moment. Usually, you can find this kind of info on official manga publisher websites or from manga enthusiasts' discussions on various online communities.
The exact number of Persona 5 manga volumes can vary depending on the region and publisher. Generally, there are approximately 8-12 volumes available. It's best to check with the latest information from reliable sources.