I would rate the Interstellarum Deep Sky Atlas (IDSA) the new (book-based) star atlas "standard". It's replaced my Uranometrias, which would be my second choice. The IDSA comes in 2 forms, "desk" and "field". The actual contents are the same in both atlases. The "desk" edition pages are regular cardstock (you could use them outdoors and won't be destroyed by dew, but they're not dew-resistant), while the "field" edition uses plastic pages that are waterproof and clearly meant to be used outdoors. The big deal with the IDSA is that each object plotted is rated for its visibility in 4", 8", 12", or >12" scopes--bright objects are in bold font, medium objects are regular font, and dim ones are in thinner fonts, so you can tell in an instant whether you are likely to spot an object or not in *your* scope. The selection categories aren't perfect but still pretty darn convenient and useful. And it's a beautiful star atlas just to look at.
Don't ignore the usefulness of computerized star atlases, either ("planetarium" programs) for your phone or tablet. Sky Safari Is the leading one here, but there are other ones too, like Luminos. There are also simple apps like the TriAtlas that can be downloaded to your tablet, but it's just the paper book on your mobile device, and doesn't take advantage of any of your device's capabilities to plan or record observations, plot comet paths, predict eclipses, or many other things.
These don't have to be mutually exclusive categories. I use the IDSA inside for planning DSO observations and SS for more transient events, then use them outside at the scope, where the IDSA makes its clearer what's usefully observable around my current sky location while SS can actually simulate the exact eyepiece view (including mirror flips or inversions) making star-hopping a breeze.