I've had my Sceptre for several months now, and not a single problem or dead pixel. I must be lucky. I think they're also known for, their DVI port dying after several month's use.
i have the x22-wg gamer and its looks great but i did unfortunately get one with the DVI problem. First the DVI port died so i decided to buy an hdmi cable and that worked great for a while and then the HDMI port died so i guess its time to RMA, im just too lazy so ive been using crappy VGA.