It's been six years since I've seriously looked into new display technology. I hope things have improved since I've been away. I want to replace my 4 megapixel 30" Dell display with something better. I just noticed Apple sells a 14.7 megapixel 5K display for $2,500. Should I be excited? If not, can someone point me in the right direction. It will be used for Photoshop CC. My budget is $4,000 max. I don't need the best, but I do want at least second best. Thanks.