I managed to grab a pair whilst they were cheap on Amazon, happy with the price considering they have gone back to £189 !
I owned the older sister PC360, people say they are the same as the G4ME ones but I think they aren't ! The new ones clamp my head more that the older PC360 & the open backed part was more open as well. For me this made the PC360 sound better (I like opened back headphones), the newer ones are open but small slots rather than open mesh on the PC360.
The sound on these are ok, the best "gaming" headset I've heard, they have a medium range driver. I only use them for Team speak usage otherwise I will use my AKG K712 pro. These have a much better soundstage, they are also double the price though.
Over all I like them but if you are considering these over your PC360's DONT !