WoW Classic vs WoW Retail – A Newbies View

Wow Classic for Beginners Vs Wow Retail For Beginners, Now I’ve played both as a newbie, which one is best?

WoW Classic – Absolute Beginner’s Point Of View;
Wow Classic playthough; (Playlist of stream replays from the STress test)
Noob vs World Of Warcraft Gameplay(retail);