Character Tier Lists

[AhoyMatey]

How would you rank the characters in Pandemic (2nd Edition)? For 4 players, I'd say:

S: Researcher
A: Dispatcher, Medic, Quarantine Specialist
B: Operations Expert, Contingency Planner
C: Scientist
D: None!

[HATFIELDER]

I'm not sure what S, A, B, C and D refer to. But ranked from best to worst:

Operations Expert
Medic
Scientist
Dispatcher
Researcher
Quarantine specialist
.
.
.
.
.
.
Contingency Planner (terrible and so dependent on when events come out)

[120kv2]

I think my pandemic best roles are ….

S: Medic,Operation expert
A:researcher,dispatcher
B:quarantine specialist
C:no one
D: no one
.
.
.
Hell:contingency planner