Depending on your TV and budget, I'd recommend this 4K UHD Blu ray player which is due to be released March 28, 2016. You will need a 4K TV (most new 2015 TV's are 4K now) and something with at least a 50" screen to appreciate the dramatic increase in resolution over regular Blu ray. A number of 4K UHD movies are being released already. I just received Sicario and Salt on 4K UHD Blu ray and am waiting for the player to be released at the end of the month. Dead Pool on 4K will be released in May. Beware of Blu rays listed as "mastered" from 4K. These are just regular Blu rays.
If you invest in Blu ray instead of 4K UHD Blu ray, it will be like getting a dvd player and dvd movies just when Blu ray players and movies were being released onto the market. The increase in resolution and depth of colors is the same type of advancement. And, don't be fooled by Blu ray players claiming 4K upscaling. That is not the same as a true 4K UHD player, and does not have the same higher resolution as true, non "upscaled" 4K.
http://www.amazon.com/gp/product/B01A9V6OI6?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00
http://www.blu-ray.com/movies/search.php?action=search&videoresolutionid=2683&sortby=releasetimestamp
http://www.blu-ray.com/deals/?category=bluraymovies