I've really come to appreciate the .pdf format of the books available at RPGNow, being especially drawn to the cheap price tag connected to the old TSR stuff. I'm looking for any opinions about what some of the older gamers (you know who you are) think about the 2nd or even 1st edition AD&D stuff. What were some of the best adventures or grand campaigns available now on .pdf? If anybody knows of any good sites with reviews of older products, I'd appreciate that too.