Hey, I am currently using a MacBook Pro (Retina, 13-inch, Mid 2014) and a Samsung U28D590 UHD monitor which is only able to display 4k resolution at 30Hz and that is unusable for me. Is there any kind of 24 - 27" external screen out there with a thunderbolt port that has the same type of display colours / contrast like my MacBook? Looking at the MacBook screen and the external Samsung one is like day and night. Any recommendations? I don't want to buy another Apple Thunderbolt Display, so any other brand is welcome.