Wow, Epic are generous with the Collectors Edition content. Definetly picking up that version, £100 is over and beyond what i'd spend on a game. Something is missing off the content for the Epic edition, which is a new set of skins for the default weapons (Infected Omen).
Seriously, Epic are generous with the content of each set.
But as Dyson said, the Epic edition will probably be reduced in a few months after launch.