The late Jonathan Goldstein was a genius in many ways, though he didn't play by academic rules and to some extent has been ignored by academics. At least they affect to ignore him, but mine his notes privately, and will be doing so for some time to come. They ignored him because he didn't hobnob and incessantly quote others, and largely kept to himself in Iowa, I gather.
First let's make sure we know what we are reading here: These two books (1 and 2 Macc; Anchor 41 and 41A) are for scholars and the scholarly public; it would be wonderful if more Christians and Jews knew the history of the first two centuries BC, a period which 'gave birth' to both religions, but Goldstein is not writing popular history or a popular commentary here. The books are full of daring and fascinating hypotheses concerning the details of the historical reality behind the narratives of 1st and 2nd Maccabees, Josephus, Daniel 7-12, parts of Enoch and parts of the Testament of Moses. He dates the apocalypses of Daniel 7-12 from this time, with critical scholars of all types and against fundamentalists of many types. And he dates the relevant parts of Enoch and TestMoses from this time as well, though this is not universally held.
He is not interested, as Martin Hengel or some other scholars were, in stating an overarching thesis about Hellenism and the Jews, though he shares some observations with Hengel. Goldstein, more thoroughly than anyone before or since, elucidated the relations of these texts to one another, and to Livy, Polybius, Diodorus, fragments found in the Church fathers, and many other sources.
Many of his conclusions are unlikely, but he was still a genius. I think that his two books have the most fire and daring of the whole first generation of Anchor Bible commentaries, and they will be relevant for much longer. They are certainly two of the foundations of any serious education in the Hasmonean period. Few scholars are still capable of his breadth, so I don't expect a better work of this type for some time to come. For Jews or Christians with some sort of liberal education who want to know more about the Hasmonean period or the origin of the Hanukkah festival, these are essential reading. (Note that the main introduction is in 1st Macc, and in 2nd Maccabees Goldstein corrects some of his views in 1 Macc and engages with some of his critics; so the books are really a unit.)