The new Terminal 3 is a vast improvement from the old Terminal 1. I have arrived and departed through here 6 times in the last few months. I have been impressed by the airy design of the building and the efficiency of the process both arrival and departure. You expect intensive security questioning and although some questions may seem irrelevant they know what they are doing. You have to allow three hours when travelling through any major airport mainly because security queues are so unpredictable. Take a good book! Duty free is quite expensive.