A person considering buying a recording of Paradise Lost might have two questions. First, Am I going to be able to follow the poem without notes and guidance? Second, should I buy the complete version or the abridged one?
Paradise Lost is a notoriously difficult text, full of learned references to mythology, history, and geography; the language is dense, the syntax twisted, the sense frequently obscure; and the poem is just plain long. Perhaps surprisingly, Anton Lesser's reading makes it possible to ride over all these difficulties; his intelligent and varied readings make the sense clear even when the language isn't. One hears the infinite variety of the poem, the delicate and touching parts as well as the stirring and sublime, the innocence of Paradise and the magnificent evil of Satan. I've read Paradise Lost perhaps half a dozen times over the years, always with notes; this is the first time I was sorry to reach the end of it.
But what about the abridged version? I don't recommend it; Milton builds up his climaxes on a vast scale, and a "great moments from Milton" approach weakens their effect. Also, on the abridged version, Eve is read by an actress. This seems to me a mistake; Paradise Lost is full of voices -- Satan and all the demonic throng, the allegorical figures of Sin and Death (Sin is also a woman), God, the Messiah, the angelic host, Adam and Eve -- and to single out one of the voices is to falsely highlight and distort. (Plus, the part is read with an odd accent, almost Irish; what is that about?) It must be granted that all of Lesser's skill can't make God Himself more than a cold and distant abstraction. But that is what Milton wrote, and probably what he intended.
So, my recommendation is to spend the extra and get the complete set. It's something you wouldn't want to miss!