I'm pretty upset with this update because I wanted to buy a 20" iMac with a LED backlit display, but it's LCD. How bad are these monitors?? I really don't want a 24" because It's a little too big for me. I do light video editing, iphoto, but the computer will primarily be used for Garageband. is the 20" lcd display really that bad? I see so much negative feedback that it's not LED.