I'm putting a temporary glitch in my Pioneer SC purchase to buy some decent headphones as a lot of my time spent awake is at night. 90% of use is going to be gaming. They can be plugged into either Yamaha RX-V667 or my CA-1010 although maybe quite further down the line I was thinking of getting a tube headphone amp. I'm currently using the Monoprice rebranded Kicker headphones and am looking to step up.
I'm not looking for an "audiophile", perfectly flat frequency response, pair of headphones. I'd rather have something that will compliment gaming and movies better. I want a big soundstage so I believe that means I want an open back headphone. I want explosions and gun blasts to rumble my head but I also don't want the bass to be overwhelming to the point of losing clarity anywhere else.
From the reading I have done I have pretty much decided that the Philips Fidelio X1's are what I am looking for but I just want some opinions from the more experienced headphones listeners around here.