I would say you should play legit, Because if you want a better experience in gaming you should play legit, I myself is playing MW2 hacked, (10th Prestige) .. Because I've played MW1 and I've gained experience from MW1, If you've got the " Skills " .. Well not exactly skills but playing type, Maybe you should hack.. But if you still need to get to your best abilities just stay legit, It'll be funner that way.