Senheiser PC 363d vs Senheiser g4me zero or Hyper X Kingston Cloud II

[Asthenophobic]

I was wondering if I were to get a headset, which of these should I get? Also, if I were to remove the Dolby USB, would it make the 363d no longer 7.1? if so, if I were to use a 7.1 surround sound card like the Dolby USB soundcard, would it make the g4me zero 7.1 like the 363d? I was wondering if the g4me zero is more comfortable than 363d and the cloud 2? my budget can go up to 350$ so these are no problem. Sorry for long post, thanks.

 

[Asthenophobic]

If possible, can you guys please tell me when the cloud 2 came out? Since the sennheiser could possibly get a new model.