I use an appletv. I have the version with a Ethernet port. It plays everything I’ve thrown at it so far and don’t have to endure commercials. The downside is you have to create an Apple account to install apps on it and not all apps are available. It’s also expensive.

Try using pcpartpicker.com. You can do your build on the site and it will list the best deals for the components you choose. As a bonus it will check to see if there are some glaring incompatibilities at the same time.