On [H]ardforums, the 48" Samsung UN48JS9000 is all the rage for a PC monitor. It's much higher image quality than the Philips. It's also curved and quantum dot. I'm getting one to go with my Pascal Titan. There's currently one on Adorama's Ebay store for like $1100 which is a great price. Considering buying two and selling one to make a profit.
4k deserves to be in a large form factor. I don't understand why companies are selling them at 30" and smaller. That's just ridiculous. For a large monitor, just sit a little farther back. And 4k really should be a large monitor, otherwise, I wouldn't bother. And the ultrawides are trendy now but they're too fucking short, and expensive. No thanks.