I've been a fan of Dorland's medical dictionary for a long time... not just because it weighs more than the others. =) There are versions on CD, also...and if you buy the dictionary/CD combo you can get their excellent spell-checker as well, which I've used for years in preference to the Stedman's one (which IMO has become over-priced). Can't help with the drug book, though... I abandoned books for MPR, Epocrates, and the internet a while back when I realized drugs change fast but the reference publication process is sloooowww...