i have the 58 model i just bought it has bad black color in 1/3 of the screen im returning it. its nice except for the whitish/yellow blackspot when screen is completely black booting up or in videos and stuff you try to play its very noticeable. it does 75 hz you have to make custom resolution to overclock to 75hz thats what its rated for. im getting the acer 27" 144hz 2k tn panel instead of this. im gonna see which is better right now and return one i dont like. if i keep lg im getting another monitor in replacement to get one thats got better overall black to it without defects. i can say playing call of duty black ops 3 its pretty sweet. civilization it doesnt look right . the letters are too small in game can barely read it...