New Headset + ??

Hey Guys,

I'm hoping to get some suggestions here.

I currently have a Sennheiser PC360, But the mic is dead so I am looking to get a new headset, I've only used OnBoard sound, I have room to expand for a sound card (if they are worth having).

Ideally I want the best quality sound/build, usage.. the norm; Films, music, gaming...

I was looking at either the MMX 300 or the QPAD QH-1339 Pro, but I don't know enough about these to make an informed decision. I ONLY use headsets (no other speakers) I am willing to get a sound card if it will help.

There is no budget restriction, but that being said just because the price tag is high doesn't mean that they are the best. (hence why i am asking about these two in specific).


EDIT:
Did i post this in the wrong section?

I currently use these:
http://www.overclockers.co.uk/showproduct.php?prodid=SP-021-ST

Steelseries Siberia v2
They are not the most expensive headset but they are very comfy (ear cups are soft and the head band is nice and sturdy but light feeling) the sound has good base without being overpowering and the highs are nice and clear well for me personally.
The mic tucks away into the headset and is fully moveable and they can be used with your iPod/music players also,the newer versions also come with lights in the ear pieces if that's your thing.

I run these through a Asus xonar sound card.
However I hear people recommending the Logitech g35's a lot but I've never used them but they say they are of equal quality to much more expensive seinheiser's.

Here they are:
http://www.overclockers.co.uk/showproduct.php?prodid=SP-070-LG

I found that the siberia v2 hurt my ears as I wear glasses but the astro A40 headset is amazing!