My Main PC setup includes:
Audient ID22 USB Interface, connected to a set of KRK Rokit 6 G3's and a pair of Sennheiser HD558's for music, gaming and Teamspeak. I tend to do a little bit of music production/sound mixing as well, with Pro Tools, where I use either my speakers or my closed Sennheiser HD380pro's.
When listening to music on my PC with headphones I have a pair of AKG K7XX's.
For when I'm out and about I use an iBasso DX50 with a pair of Ostry KC06's (or the upgraded pair, KC06A's).
Really like my setup at the moment, however will be looking to be getting a dedicated headphone amp and a portable one for my Dx50 at some point this year. Would love to get a pair of HD 650's this year also, but that may be out of my budget as I am planning on purchasing the new Pascal cards later on in the year too.