So I am looking for a new monitor for my desktop and there is this whole PWM vs flicker-free etc. And without actually using it regularly it seems hard to know by just going to the store if you are in the "minority" that are affected. I have a dell e6410 laptop and it is LED backlit, and I'm sure it has to use PWM, can anyone confirm? I have used my laptop screen for long periods of time and haven't had any problems with headaches, strain, or anything else. So it may allow me to widen my horizons on a screen purchase. Thanks!