It's been 9 years since GW2 has been announced and nearly 4 since it launched. The game has changed and is still changing since the announcement to present day. Which version did you like the most?
https://wiki.guildwars2.com/wiki/Demo
https://wiki.guildwars2.com/wiki/Beta#Pre-release
I'm not counting pre-demo (alpha?) because I doubt there is anybody that has played it here.
EDIT: I don't want to make another thread for the "which is your least favourite" so please post a comment if you have the time!