Hope brakes

[taffysmith]

Hi all
Just wondering if anyone can give me some advice, I've Ben offered a set of second hand x2 or m4 brakes the problem is I'm unsure which to go for and what I should pay.

Views from anyone would be appreciated

[oldbird]

Hope x2 for me,
Got them on my 5 and cant fault them, even i can change the pads