Is the 2011 MacBook Air Slow?

My friend is looking into getting his first MacBook, but can't pay the price of a brand new one. He needs it to be portable and somewhat affordable so I figured the 2011 MBA would be a good choice. Is it still a reliable computer? He's not going to be using it for much of anything outside of regular people stuff, and I don't have any first hand experience with one. Does anyone have one here? Is Sandy Bridge still suitable? Thanks in advance!