Initial thoughts on Sling Blue + DVR, compared to PS Vue:
No web app. For mobile devices, there are iOS and Android apps. Maybe others. The Mac app sucks. It doesn't know anything about the Cloud DVR service, so you can't watch recorded shows or set up new recordings. The Windows app does do Cloud DVR.
Most apps have a channel based guide. You pick the channel, it shows you the upcoming shows in a horizontal slider icon type list. The Android TV app also has a grid guide. Both are seven days, I think.
I haven't tried the AppleTV (Gen 4) app yet.
Jump ahead (30 sec)/back (10 sec) on Android worked OK, but not great. Too often when I tried to back up after going a little too far forward, it would give an error and need to resync. It would only take a few seconds, but it was annoying.
At this point the lack of cloud DVR functionality in the Mac app is a deal killer. I do almost all my scheduling using my Mac, because the search UI is faster than the lean back UI on the streamer boxes.