You can only evaluate work based on the work you've seen by others. This is were the challenge starts and ends. Art is nothing more than a contrast that either resonates with you or goes completely unnoticed by an equal to, or greater contrast. Two great words; Skeuomorph→ and Umwelt→. Our individual perceptions, in my opinion, lie somewhere between these two words. Ideas are greater than facts. The idea of contemporary art, is just that, an idea. It's art that happens in your specific lifetime and generally overlaps modern art as you get older, wiser and just generally experience more in your life. And while I myself tried explain it, art requires no explanation. Everything created that is not considered art, is an attempt to explain something.
Fonts are the tools or devices used to recreate, publish or show a typeface. So this post title should actually read, "Best typefaces for printed documents." A font is used to reproduce a typeface, digital or analog. ;)
Since the post title implies that I was going to suggest a list of best practices for typefaces for print, I'll simply say this;
Try not to use more than two typefaces within typesetting that requires large quantities of text and information. Structure is more important than design embellishment. Having said this, it's also important to note that type used as design embellishment does not need to follow the same rules as type used in typesetting. There is a distinct, but fine line between typesetting as a functional form of literature and typesetting as design and embellishment. In the end, be consistent and concise.