No buzzing here. The colors are a bit "off" on the Mac side and much better in Windows. I'm sure with some tweaking it will be fine. I fired Q4 and it was awesome with no sign of ghosting using X1900XT. The ONLY problem I may have with this monitor is the size. I'm coming from a 2007WFP. I definitely wanted a bigger monitor but until I set it up in my "area", I didn't realize how huge it would be. I'm still messing with distance and viewing angle using an articulating arm. As you can see, my setup is rather unique:



