By coding headphones I mean with active noise cancellation, to be focused on your work. However I'd like to have it more universal since i do play videogames in my freetime, so with a microphone would be best - Or should i have 2 sets for both activities?

Something below 100€ would be nice (naive yes, but I aint got much).

I looked at the Mixcder e7 on Amazon, which looked promising. Thoughts?