Telephoto Lens test

I tested the following lenses after buying the EF 300F4L... I need to sell either the 300 or the Bigma

EF 70-200 F2.8L
EF 70-200 F2.8L + 1.4x
EF 300 F4L
EF 300 F4L + 1.4x
Sigma 50-500 F4-6.3