TL;DR:
1. Raspberry Pi 3, $35 (with the case in image: Flirc Kodi-themed Raspberry Pi-case, $11), external USB-hdd
2. OSMC (great Kodi-build for Raspberry Pi), dvdbackup, genisoimage
Long version:
The OP image in question is Flirc's Raspberry Pi Kodi-themed case, which provides at least 10 celcius cooler performance. At best up to 20 C. It's around $11. Only the quite new, year or two old, full aluminium case that is around $50 - $60 provides better passive cooling.
Raspberry Pi is Meltdown / Spectre-proof. Raspberry Pi 3 with OSMC can playback x264 1080p content fairly well, so OP, you are off to solid start. No matter what you'd prefer, OP, I'd seriously recommend you to getting know with Meltdown / Spectre-vulnerability and plan from there, otherwise you'll end up vulnerable piece of junk that has no purpose being connected to the internet.
1. Raspberry Pi 3 ( any RPI should be Meltdown / Spectre-immune)
2. Kodi, I've been personally using OSMC, works great with HDMI-CEC that makes use of telly's own remote, but there's Flirc's usb-dongle that allows almost any remote to work with RPI.
3. There's Youtube and other legit streaming websites plugins available.
4. Consider external closure HDD, connected with USB, for storing your own favourite content, series, movies. I've never used streaming pirated media with Kodi.
5. If using local media, you can easily copy dvds to hdd with linux, dvdbackup and genisoimage:
$ dvdbackup -M -p
$ genisoimage -dvd-video -udf -o TellySeries.S1E01E02E03E04.iso /dvdbackup-folder
Meltdown/Spectre:
meltdownattack.com/
hooktube.com/watch?v=I5mRwzVvFGE
(skip to 1:31 for short version)
news.softpedia.com/news/raspberry-pi-devices-aren-t-affected-by-the-meltdown-and-spectre-vulnerabilities-519255.shtml
OSMC:
osmc.tv/
FLIRC:
flirc.tv/more/raspberry-pi-case-ke
flirc.tv/more/flirc-usb
Linux:
ubuntu-mate.org/download/ ( 16.04.03 )