This is what I wrote the last time this came up, so here goes:

I would consider myself quite the Osprey connoisseur since I own at least a 100 different titles from their publishing company.

First thing's first: it genuinely depends on the book. I exclusively read their titles on late 19th century/20th century warfare. There are some authors who are amazing at what they do, with their own independent research and fresh insights. On the top of my head, I can easily say that Robert Forczyk, Mark Stille, Steve J. Zaloga and to some extent Gordon Rottman are all worthy of respect in their writing. However, there are also those that are of less quality and almost a bit "lazy" in their research and compilation. One of those men would be Ken Ford who can be a mixed bag at times. Quite often, however, the editors of the individual series (like Men-at-Arms) are men who are proper historians and rarely let a mistake go by - even though it does happen. For the MAA series, I believe Martin Windrow is the series editor.

There are some obvious limitations to their series books. The length, ranging from 48 up to 96 pages depending on the series, does limit the scope. However, this is entirely made up through excellent maps (which is really the strength of Osprey) and artwork (which, like anything else, can vary in quality). I have found myself going back to Osprey books several times to get a closer look at certain maps that are otherwise not included in larger works on military campaigns. Another downside to the books are the fact that they can be exclusively about one side only. Perhaps it's easier for the author to write that way due to the limitations, but it comes off bad at times.

It's hard to generalize the Osprey books in broad terms in my opinion. They are a valuable source for topics that doesn't have widespread literature in English and in this, Osprey shines. Their MAA books on the Brazilian Expeditionary Force in WWII and The Chaco War are both brilliant examples of great writing and research. There are some criticism however, from Dr. Forczyk who I mentioned before, that some MAA books are getting bogged into 48 pages of uniform details - and I have to admit that it can be a bit boring at times reading about all the different colors used for this particular dress uniform's lanyard. This does depend on the author writing however.

I would recommend following Robert Forczyk's reviews of Osprey books through his Amazon account. Despite the fact that he writes for the company, he is a very objective reviewer and a very talented one at that.

More specifically, if anyone could recommend me Osprey books they personally really enjoyed I would really appreciate that!