You may remember my post entitled "Jepp or NOS." This is along that same vein, however, this question doesn't bear any real financial implications. Here's the question.

I am an AOPA memeber, and with that I recieve their airport directory, revised on an annual basis, for part of my membership dues. I also have a "Flight Guide" (Compact book of airport diagrams and information - invaluable!) and have been subscribing to their revision service for a few years now. My question is: Am I missing pertinant information by not having the Airport/Facilities Directory to refer to? Fortunately, AFDs are pretty cheap, so it's not a question of money.