My top silver age books that I have always cherished are in order AF 15, FF 1, HULK 1, X-MEN 1, TOS 39, AVENGERS 1, AVENGERS 4, TTA 27. Still missing my JIM 83 but hoping to get one this year and place it right after my TOS 39. The coolest part is that I joined this unbelievable forum February 1st 2016 and have purchased each of those books except for my Avengers 4 (already owned it) here on the forum. It started with meeting Bunky Brian at a local comic show after being out of collecting for maybe 15 years. He told me about the forum and less than a year after that I met him at his business and purchased my AF15 and have not looked back. I have been really lucky to find myself surrounded by some great people here that I have purchased some incredible books from, sold a few good books too as well and all while soaking up valuable advice along the way.
(Oops just remembered got my FF 1 through a comiclink auction but only after some great forum advice).