I don't know why John Chu's comment is downvoted. 100% in the same camp as him. That 500ms echo is an incredibly poor decision. Additionally, he got lazy towards the end of the scene and the echo bled into the human dialogue.
I love seeing videos like this. However, I think it does not underscore a huge drawback of a Hackintosh: the time it takes for research and configuration. Contrary to the video, you don't just install some software and you are done. For first time Hackintosh hackers, I would expect it would take you no less than 30 hours to do the research, assemble and configure.
Additionally, random little things will be slightly off, but these are mostly cosmetic and you can learn to live with them. The install process has gotten much much easier, but still a far ways off.
That said, all of my Hackintoshes outperform my real macs except my $10k mac Pro, which I would not buy again. Contrary to popular opinion, the Mac Pro form factor is flawed. It looks like a crazy octopus with all the wire radially sticking out, and the lightning bolt connectors sometimes disconnect.. WTFFFFF. Pro tip: the extra graphics card is almost completely useless except for extremely rare situations.
If you are a tech dude, def give a Hackintosh a go. If not, the extra money might be worth it.