Roku vs Raspberry Pi
When comparing Roku vs Raspberry Pi, the Slant community recommends Raspberry Pi for most people. In the question“What are the best media centers?” Raspberry Pi is ranked 1st while Roku is ranked 2nd. The most important reason people chose Raspberry Pi is:
You can use it for surfing the web, play retro games, and host your own.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Not just a Media Center
You can use it for surfing the web, play retro games, and host your own.
Pro Customizable
A lot of Media Center OS to choose.
Cons
Con Easy to accidentally change channel
It's very easy to accidentally sit on the remote, and stop your video, or exit the channel. Apple Remote does not have this problem.
Con Frustrating & complex remote design
For some apps like YouTube, left and right switches videos. While left and right on Netflix will fastforward/rewind. Apple Remote is a better & simpler design, a direction pad & select button is all you need.
Con Not a hobbyist platform
It's next to impossible to alter the core of the Roku, like create custom notifications. While new channels can be made, existing ones can't be modified.
Con Lack of 4K support
The max video output is 1080p.
Edit: Raspberry Pi 4 now supports dual 4K displays. More at : https://www.raspberrypi.org/products/raspberry-pi-4-model-b/