The best is between E and F.
E has slightly better low light and natural color.
So I guest :
E -> Olympus and F -> 808 pureview
It seem E was the best then D and F were equal. A, B and C were lower quality.
I guest that
E = Olympus E-PL1
D = Nokia 808
F = Nokia N8
I like F and D the most, but if you ask me, they're all good.
A - N8
B - One X
C - GS3
D - iPhone 4S
E - 808
F - EPL2
It's hard to decide which is the best between E and F, so I guess both get my vote. F is definitely the clearest though.
E is the best sensor but it doesnt mean its the pureview
F is the second best
E - 1st (best); but lacks a bit of sharpness
F - 2nd; excellent sharpness and detail
B - 3rd
D - 4th
A - 5th
C - Worst
E is best! with F, B, D, A, and C to be the worst.. fingers crossed to know the results.. please reveal them fast GSM!