I used to use three monitors: Two 22 inches plus my 15 inches laptop monitor. It though it was a really efficient way of working, but it had a problem: Moving was a hassle. I decided to get rid of the monitors for a while to test their value and I found out it's not such a big improvement. Now I only work in my laptop screen. I have a full mobility and I love that. I don't miss my monitors at all.