My girlfriend and I finally cut our cable. The only real reason we still had it for so long was sports stuff, but neither of us really care about that anymore (plus Sling has NFL, which was the only sport we used to watch anyways).
We were really disappointed with Sling's quality on the Xbox One's app, we actually canceled Starz through Sling because the quality was so much better on the standalone Starz app.
But just the other day the app was updated and it seems to be performing a lot better (no more constant quality drops and freezes for buffering). Plus they added the DVR functionality to the XB1 app too so we can do everything from there.
We have the commercial free Hulu subscription which is where we watch most of our shows (all the ones that come to Hulu, anyways), and then we just subscribe to HBO Now, Showtime, Starz, and CBS Now when there are shows on those channels we want to watch, and drop them when there's not.
With all the subscriptions going at once, it comes to about $80 vs. the over 200 we were paying for cable, and most of the time we won't have all the subscriptions so it'll be more like $50-60.