So I'm looking a good gaming keyboard, and my friend has the g510 which he says is his favorite keyboard so. Right now the g510 on amazon is 110$ and the g510s is 80$. He said he that the original g510 is better than the s version. And so I am just wondering how they are different and which one is better for the money. Also if there are any other keyboards that are backlit and have macro keys that are good also, please recommend them to me.