I think the lange Path flashcards are really good, but I am using them in conjunction with studying for classes, not for boards. They're not as "flash-cardy" as they have a decent amount of info on them, but I personally think it's all pretty relevant. I knwo some people who use the bRS flashcards but they are VERY short and just use buzzwords, but I guess flashcards aren'ts upposed to be long. I guess it's more what you prefer than anything. If you want a bit more detail, Lange is good, but if you want one or two word flashcards, BRS is the way to go.