Sincere question coming from someone who defaulted to the Studio Display, knowing very little about display tech. What makes a good display and what, from a technical point of view, makes the Studio Display superior?
The first and probably most important thing is the PPI. A 27-inch display at 5K gives you 218 PPI, which is what you need to hit Retina quality. Anything lower and text just starts looking a bit soft or pixelated. It’s not the end of the world, but kind of like ProMotion on iPads, once you’ve used it, you notice when it’s not there. Most other displays are either 4K or if they are 5K, they’re a different size that doesn’t quite hit the PPI needed for that same crispness.
Color reproduction is another factor. Some monitors can match it, sure, but not many actually do it at Retina quality.
There are a few options out there that come close to the Studio Display in sharpness, but they usually cost a few hundred less because they skip out on things like a decent camera, good speakers, or a solid aluminum build. So people end up going with the Studio Display anyway, because once you factor in the extras, you’re either paying the same or more to piece it all together.
Asus just dropped a Retina quality monitor that’s about half the price of the Studio Display. It’s really the first legit alternative where the tradeoffs make sense for the value. But it only came out like a month ago, so up until that point, nothing else was really competing.
Oh and one last thing I almost forgot, the glossy screen. That’s actually something unique. Even the real alternatives like the Asus don’t come with a glossy panel.