Having used APEX a few times, I suppose faster opinions would always be nice. I had not thought about how differing communities within the hobby might point toward a different expertising service based on their needs, but it makes total sense. From the standpoint of an individual collector, the concept of a transparent and trusted service is foremost in my mind.
The APRL is a crown jewel of this hobby. If you ever have the chance to get to Bellefonte, you owe it to yourself to visit. Checking books out is a great way to access the content. On the AP website, the Library has a link to duplicate books for sale at the library. Lots of interesting stuff pops up there from time to time as well, is fairly priced and in good condition. We are lucky to have this resource, and the terrific folks that staff it.