Last year, I bought a MBP with both screen types (at the recommendation of an Apple employee - they said just return the one I didn’t like) and compared them side by side for a few days. I also spent some time in the Apple Store, looking at iMacs side by side, since they were the only things they had on display with the Nano Texture.

tl;dr in perfect lighting conditions - which I noticed the Apple Store did a pretty good job at - the glossy screen wins, obviously. The contrast is quite a bit better, pictures really pop, and text isn’t particularly affected. In anything other than perfect lighting, Nano Texture wins by a mile.

If you’re going to be doing any kind of photo or video work, you’ll probably want the glossy screen, or (what I suspect most would have) the Nano Texture, with a dedicated external monitor for the best of both worlds.

If you’re primarily using your laptop for anything other than photo / video work, or if you use it mobile, you want the Nano Texture screen. I can’t objectively say what you lose in contrast ratio, but it’s not bad enough to overcome the huge disparity in glare reduction. I haven’t regretted my Nano Texture MBP for a second.