I'd like to get an external monitor for my new 2014 Retina Macbook Pro. I don't do any video-editing or other apps that would require HD, etc., but I'd like to get the best monitor with least eyestrain I can for less than $600 or so ($700 if it's really going to last and meet longer term needs). What do you recommend? I've looked at the forums here and am confused as to what's best. Thanks.