I only use 2 19" lcd screens for multi charts and a trading platform, I deffinetely got 4 in RSI on 30. I also got, don't laugh, 37 inch lcd for cartoon network, great for relaxation
5 minute time frame.. Of course the market then spiked much higher before falling again but I went long again at 1246.50 and got out at 1250 so not a total loss today lol....