Peter is looking for a huge monitor for his Mac. He wants one that's as close to 4K as possible, and he wants accurate color. Leo says Dell monitors, Samsung's Curve, and the Acer Predator all have a great form factor.
SRGB 125 is a broad color gamut, but a 27" monitor may be a better option for computing. If he's into gaming, it may be good, but the aspect ratio may throw it off.