Sennheiser PC 363D quality?

I have been wearing my PC 363D's for about a month and I haven't been particularly amazed. It's not that the sound is poor or anything but they don't sound any different to my old Turtle beach P11's in terms of audio and microphone.

Typically I like to play FPS games so the surround sound looked like a good feature for me but it still feels as if I have stereo output.

I have installed the driver and changed the speaker in driver.

Would anyone be able to define why this is the case or whether it is just a case of my ears not being very acute to sound.

-Binary

if you are running windows then you will not notice a difference since windows degrades all your audio by using it's audio stack -zoltan

That's annoying since most of my applications work only on windows. Does windows 8.1 fix this by any chance since my PC is running 7?