Advice on new speakers

[gamingguy27]

Hello,

I love music, (and games) and I'm going to buy a new set of speakers to complete the feel of my pc.

I have a X-Fi Xtreme Music soundcard, which cant really make use of my current speakers.

I have two options (I would like surrond sound),

1. Buy a head unit and buy a nice sub and tweeters.

or

2. Buy a system like the Logictech Z-5400, or Z-5500s, I mean I would prefer to spend less than more...

Also, If i buy a nice set like the Z-5500s then that has its own encoding. Does this make my soundcard redundant?

Any advice, or decent speakers you've heard of would be useful.

Alex.