Buying a new SoundCard for Gaming with Logitech Z906 5.1

Hi.
Im looking at buying a new audio card mostly for gaming, but also for watching movies and lots of trailers as im a gametrailer creater.

I first saw the Xonar essence ST and i actually orderd this one, but than i noticed that it dosnt have 5.1 analog.
And from what iv read i think that analog has a lot better audio on the Z906 Speakers than it has with optical.
http://www.asus.com/Multimedia/Audio_Cards/Xonar_Essenc...

Than its the ASUS XONAR PHOEBUS 7.1, looks cool and everything but is it any good compared to the others?
And that knobe(extra controller) I have no use for it, who would need this with a proper audio system?

CREATIVE SOUND BLASTER X-FI TITANIUM HD
This one i did not understand quit, how do i hook it up with my speaker system?
Is it only optical?

ASUS XONAR D2X 7.1
This seems like a good shoot, but its 7.1 i dont need that.

Creative SB Recon3D Fatal1ty Champion
Now this card really appeals to me. It got a red light from it, which is awsome for my black red case. It is 5.1 with analog.
A feature allowing you to hear footstepps that are far away, better. + for CS gamers if it works.
I also like the front panel that it comes with.
And than theres the Stereo microphone.


Aside from all the cool features i want good sound quality for my system.
So which one should i go with?