I agree with you Rob, printed transfer rates mean nothing to me either, it's what actually happens for me
And MyAmazingDiscoveries, only the people with bad transfer rates will complain - Some people (and I know you won't believe this
don't like Apple products and for them Samsung may be the best. Some don't like Synology and only Qnap or WD are worthwhile.
Also, what is a bad/too slow rate for one is fine for another
It's like your word processor ... the best one is the one you use.
So here goes:
Wireless Only sat about 3m away from my SkyTV router (while watching sky)
1.13 GB single file NAS to MacBook Air Import 25 seconds
1.13 GB single file NAS to iPhone 7 LumaFusion Import 3 min 25 sec
1.13 GB file 1080p (1920 x 1080) 25 fps 24mbs output to NAS (after creating file in LumaFusion) 3 min 58 sec
1.13 GB file MacBook Air to NAS 50 seconds
Now, for me, those times are absolutely fine. For other people things may be different.
I don't have a Gnarbox but because it is SSD I would expect that to be faster still
Hope that helped
Edit: I have no idea what a Comcast box is or does, sorry. However, the NAS can be directly connected to a router via an ethernet cable (mine is)