Howie has nailed it! Should you choose to move on towards an airline in the future you will find that Jeppesen documents are almost exclusively used in this environment. That said, each company is different however you'll find them to be the norm in most.
They may well be more expensive up front, however from what I understand Jepps are more cost effective come renewal time.
Speling..........or Spelling?
Touche
Wouldn't that be... touché?
Very best regards to you too!
OpsN.