I asked the same question about 6 months ago and have since bought 3 packs trying to find the best set. None of them were great in my mind. I have Lippincott pharm cards, lange, and BRS. If you are looking for long detailed cards go with Lippincott. If you are looking for a combo of clinical vignette and brief, straight forward mechs, side effects, etc., then get lange. If you want something that gives you only the most important fact about a drug whether it be the horrible side effect, interesting MOA, PK characteristic, etc go with BRS. Like I said, I'm not impressed with any of them. Hope that helps