I've read the whole thread but my doubt remains: what would be your recommendation for a flat response headphone?
As I've always said, and of course I can only go by the sets I've auditioned (a few dozen), the HD25-1 is the most-natural-sounding to my ears, meaning flat / zero hype.
I've no idea how it looks on paper, but in the real world, where it counts...
I am personally using Logitech G430 wireless headset for my personal use specifically for group meetings and conference calls and I would recommend you to use this because it is a very good option instead of the handfrees or earbuds and It is quite affordable. Wireless headphones works best according to me. They are easy to wear and easy to use.
Anybody check out the Steven Slate VSX headphones/software? It's a whole different thing, but I've been enjoying playing the Kemper through mine. You do need to run the software for the room effects to happen, so there's going to be some added latency.
I am personally using Logitech G430 wireless headset for my personal use specifically for group meetings and conference calls and I would recommend you to use this because it is a very good option instead of the handfrees or earbuds and It is quite affordable. Wireless headphones works best according to me. They are easy to wear and easy to use.
I have a pair of G930s. Man, they are heavy as poop, but do great 7.1 surround simulation for games. I never once thought about using them over my studio headphones because they are not FRFR, but I might try just for the heck of it because people listen to music with all kinds of weird stuff, like airPods, cell phone speakers, baby monitors (if you have a rockin' child), etc. 
