Ya its a good read.
Actually, the Osprey series authors are from various countries, only the chief editorial staff is from the UK. Thats why its such a good series, they find experts on different fields of history to actually research and write the books. For example, the one on Japanese Navy Aces is written by Henry Sakaida, who is a Japanese WW2 historian.
Osprey isnt the only series worth getting, by a long shot, but I find they are very good books and devoid of the quagmire of historical-nationalism in content, for the most part (although nobodys perfect).