I work on the basis that I require ALL applicable charts and data for everywhere within the range of the aircraft with its current fuel load in the current weather conditions. That covers all possible scenarios because one is then in a position to say to an FOI "there is no point in me carrying chart XYZ because I can't possibly get there, therefore it can"t be applicable".
To put it another way, if all its good for today is wiping my arse, it ain't applicable.*
ap·pli·ca·ble (pl-k-bl, -plk-)
adj.
That can be applied; relevant or appropriate
ap•plied (əˈplaɪd)
adj.
1. having a practical purpose or use; derived from or involved with actual phenomena: applied mathematics.
2. having a primarily utilitarian function:
* And I carry everything on the iPad with Ozrunways anyway.