what was wrong with iPad? never seen iPad with Nano personally, but as it gets dirt quickly even on my iMac, I dont know how bad it may work on touch screen
Outside, the nano shinned. Zero gloss, zeo reflections, zero nothing. It was amazing. The negative was when editing and applying color grading. Either on video photo. Obviously both products use different display tech, [one being Tandem OLED with the other Mini-LED] however the vibrancy of color was vastly different.
if you rely on accurate color and need to see difference between the original and the edit, standard display 100%. Especially if your editing LOG image and need to see each specific color-hue comparisons.
if your really OCD and picky, then standard. If you can deal with the nano-texture and finalize the photo edits on a monitor, then stick with the nano. It's very good, but for some professions it comes with compromises.