From what I understand, HEX is a company based in Korea that makes guitars and now ukuleles as well. I just came across a sound sample that I thought sounded really nice - not just the Uke, but the player and the song, "Dancing Queen" from ABBA:
https://www.youtube.com/watch?v=DDzSmU_iAPU
https://www.youtube.com/watch?v=DDzSmU_iAPU