proedros
Headphoneus Supremus
Yeah but my guess is top 3 would still be pretty easy, and if 50 people or more want to participate it would come down to who posts the right variation of the top 3 first. And it has to be challenging man, it's a $900 iem haha.
your prize your rules

you can make it top-5 and if no one gets all 5 correctly , you could give it to whoever finds 4 etc
cheers