Best, Most Compact MATX case for 2016(Q1)

[Going Bald]

Found a video. That is a small case. https://www.youtube.com/watch?v=HdLe0ama8MQ

Have you looked at any of the 1U rack mount cases? They will fit into a laptop carry on bag and will take a mATX board. Or consider one of the slim HTPC cases.