The only real reasons to get the D5600 instead of a D5300 is for SnapBridge and the touch-screen interface. I don´t believe that justifies it costing about twice as much as a D5300 ($700 D5600 vs $350 D5300).
The touchscreen is nice given the lack of controls on the rest of the body. I still miss the second dial from my D90, but the touch interface on the D5600 is good enough for most cases. That being said, I don´t think it´s that much more useful than the D5300´s D-pad interface.
The main selling point of the D5600 over the D5300 is SnapBridge vs GPS. The D5300´s geotagging support is abysmal. Even in the best of conditions (tediously updating to a recent A-GPS file, shooting in a park with good LOS to satellites, etc), I only got about geotags in about 10% of my photos. However, that condition is BETTER than SnapBridge in its current (1.2.0 SnapBridge 1.0.1 D5600) state.
Today, I updated my D5600 to the latest firmware that was just released. Pairing still failed the first time I tried it, but once established, the pairing seems to persist now, and my camera and phone appear to be connected when in proximity. On the downside, the software is still awful and does not work well. The primary reason that I want SnapBridge is for geotagging. The camera does add geotags, but they´re VERY inaccurate. The phone is spot on with its location, but the camera is often using a GPS location that is 30-60 minutes old, often using a much older geotag even though a newer one is available.
Below is a dump of my exif data for multiple files that I took today to test out Snapbridge (my phone was continually within about 5 feet of the camera, and I was in constant motion in a vehicle). Note that ´TimeZone=-08:00´.
You´ll see that DSC_0017 was taken at 23:46:55Z, but the camera used a 23:37:50.38Z geotag instead of the 23:44:22.45Z geotag that was obviously available (as it was used in the very next photo). In this case, we got a very stale geotag (over 9 minutes old) even though there was a less stale geotag available to the camera (2.5 minutes old). 2.5 minutes old is still not ideal, but it´s certainly better than 9 minutes.
As an even clearer example, take a look at DSC_0034. In the case of DSC_0034, the geotag that was used was almost an hour old, but there was a geotag available that was ´´only´´ 7 minutes old at that point. Obviously, a 7 minute old geotag is not acceptable, but it´s MUCH better than one that is an hour old.
At least with the D5300, it was obvious which photos needed manual geotagging since they were missing tags. Now, we get geotags on all files, but we have zero confidence in their correctness.
Unacceptable!
======== DSC_0016.JPG
GPS Date/Time : 2017:03:03 23:37:50.38Z
Create Date : 2017:03:03 15:44:45
======== DSC_0017.JPG
GPS Date/Time : 2017:03:03 23:37:50.38Z
Create Date : 2017:03:03 15:46:55
======== DSC_0018.JPG
GPS Date/Time : 2017:03:03 23:44:22.45Z
Create Date : 2017:03:03 15:48:28
======== DSC_0019.JPG
GPS Date/Time : 2017:03:03 23:44:22.45Z
Create Date : 2017:03:03 15:51:20
======== DSC_0020.JPG
GPS Date/Time : 2017:03:03 23:48:34.76Z
Create Date : 2017:03:03 15:53:37
======== DSC_0021.JPG
GPS Date/Time : 2017:03:03 23:48:34.76Z
Create Date : 2017:03:03 15:56:16
======== DSC_0022.JPG
GPS Date/Time : 2017:03:03 23:48:34.76Z
Create Date : 2017:03:03 15:56:17
======== DSC_0023.JPG
GPS Date/Time : 2017:03:03 23:55:15.99Z
Create Date : 2017:03:03 16:12:42
======== DSC_0024.JPG
GPS Date/Time : 2017:03:03 23:55:15.99Z
Create Date : 2017:03:03 16:28:35
======== DSC_0025.JPG
GPS Date/Time : 2017:03:03 23:55:15.99Z
Create Date : 2017:03:03 16:29:03
======== DSC_0026.JPG
GPS Date/Time : 2017:03:03 23:55:15.99Z
Create Date : 2017:03:03 16:42:51
======== DSC_0027.JPG
GPS Date/Time : 2017:03:03 23:55:15.99Z
Create Date : 2017:03:03 16:43:03
======== DSC_0028.JPG
GPS Date/Time : 2017:03:03 23:55:15.99Z
Create Date : 2017:03:03 16:43:16
======== DSC_0029.JPG
GPS Date/Time : 2017:03:03 23:55:15.99Z
Create Date : 2017:03:03 16:43:18
======== DSC_0030.JPG
GPS Date/Time : 2017:03:03 23:55:15.99Z
Create Date : 2017:03:03 16:43:35
======== DSC_0031.JPG
GPS Date/Time : 2017:03:03 23:55:15.99Z
Create Date : 2017:03:03 16:44:42
======== DSC_0032.JPG
GPS Date/Time : 2017:03:03 23:55:15.99Z
Create Date : 2017:03:03 16:44:44
======== DSC_0033.JPG
GPS Date/Time : 2017:03:03 23:55:15.99Z
Create Date : 2017:03:03 16:49:27
======== DSC_0034.JPG
GPS Date/Time : 2017:03:03 23:55:15.99Z
Create Date : 2017:03:03 16:49:37
======== DSC_0035.JPG
GPS Date/Time : 2017:03:04 00:42:24Z
Create Date : 2017:03:03 16:49:40