Sound card selection question

[paul2955tw]

I was looking through bunch of sound cards to put in my pc and I found these 3 within my price range.
Asus Xonar DG sound card
http://www.msy.com.au/product.jsp?productId=6823

Creative SB5.1-vx 5.1 sound blaster
http://www.msy.com.au/product.jsp?productId=5616

Creative Audigy Value PCI sound blaster
http://www.msy.com.au/product.jsp?productId=5620

Which one of these cards will you recommand?

 

[paul2955tw]

what price range for speakers would you guys suggest match up with these sound cards by the way?
thanks in advance