Surprised no one gave a shout out to the Audeze Maxwells, since its A. Made for gaming with a mic attachment B. Is wireless for convenience and C. Actually has the approval of audiophiles such as Resolve reviews, who's typically very critical of headphones.

Otherwise, if you found the 560s to sound less 'full' you could look towards the 6XX. There's something to be said about gaming performance and soundstage differences with other models (the usual esoterics), but what it ultimately comes down to is your own sound preference.

Edit: just noticed the price requirement, and the Maxwell may go over actually. If you could stretch your budget I would still recommend that, or the 6X0 and Beyer 770