I've been a complete convert to Inbox. I think that it lays things out better than Gmail both on a phone as well as on the desktop. I also like the Bundles. I like all of my promotional emails going into one dedicated spot and only having them come through once a day. I find it helps me keep everything organized better. I know that I could have set up filters before, but I never took the time. Out of the box, Inbox does a good job of it.
If you're interested in learning more about bundles, check out this post from Gmail.