what is the best weapon?

what is the best weapon between the TAR21 or XM8?
with scope and with out scope what is the best?
answer pls coz i want to know fast

Depends how you play. But i'd rather XM8.

i am good with the scope of XM8 and with TAR i am not 2 good while with XM8
but i want 2 know what is the best of this 2 weapons?
i think i will buy the XM8 but im not sure if it's the best
can u say me?