Of course, I would recommend you to do your Black Friday shopping at SPAN.COM, but if you simply are hunting for the price it probably will be the Amazon where you land. But do try to ask for their Free hardware test and configuration service They will set up your raid and even install your preferred apps.
Black Friday 2019| Budget NAS for simple computer and mobile backups
Qnap 28A and 31p series are made for simple tasks like data backup and local file storage. These models are very limited to their one task. But if all you need is to back up couple of computers then this is all you need.
Black Friday 2019| Plus series NAS for expand-ability, upgrades, extra performance
The B /Be series are the flagship models. They are very universal in use. You can not only back things up but also turn this thing into a server of many kinds. They also are very easily expandable and easy to upgrade.
Black Friday 2019| Best Plex NAS
Here are the cheapest Plex NAS for local streaming only. If you like to watch movies on at the best quality- then local streaming is for you.
HD/Full HD Transcoder
If you have big collection of 1080p movies. These are the options for you. You can easily transcode videos into a compatible formats so that receiving device have no problems playing any content you want.
4K Video Transcoder
Those who always have the latest technology might consider 4K capable NAS options. The 82 series not only can transcode 4k but also stream 4K HDR 10bit content over HDMI2.0 connection it feature at the back.
Black Friday 2019| 10GbE / 40GbE NAS/ Thunderbolt
For those who create amazing 4K content might consider fast bandwidth NAS options.