We have a 3 way tie here, but the strawpoll link shared earlier has Helios as the winner. Helios has been chosen. Voting will be locked.. Thanks to everyone who participated!
Sadly I can vote because the poll has been locked. In case I could have voted I would have voted for argon. Helios has won, well, but I do not like it : helios means sun, and here we talk about a gaz, so not very appropriate I guess...