I've got a pair of Meze 99 Classics that I love. Fun, non-fatiguing sound profile, very comfortable, plus they look fantastic for all those telemedicine and zoom conference calls we're stuck doing these days... In the under $500 range, I think they'd be awfully tough to beat. I'm also a physician and let a few of my partners try them...none are audiophiles but it was an eye opener for a couple of them. I'd also suggest picking up a USB camera adapter plus dongle-style DAC for the iPad (Dragonfly, EarMen Eagle/Sparrow, etc). They're small enough to fit in the headphone carry case so not inconvenient like a typical headphone amp would be. I have a dragonfly red I use with both the Mezes and my Campfire audio earbuds and I think it greatly improves the sound via my iPhone.