The only problem there is that I will only have about $130 to spend on a set of speakers, and the ACS-48's are $200 where I am, and the ACS-45.1's are $125
The pcworks speakers are about $100 where I am. If there is not alot of difference in the quality of the sound, I may just go with the pcworks (there is also a $28 mail in rebate from creative labs, so this set would only cost me less than $80 after tax and rebate).
Well, I bit the bullet and bought a set of Altec Lansing acs-45.1 speakers. They are AWESOME compared to my old speakers, and they kick pc-works's ass in the bass department.
I ran quake II, and was very happy with the deep resonating bass of the subwoofer in this game. The acs-45.1 revisions have a wood enclosure for the sub, and this makes quite a difference at the bass response.
The pcworks speakers are good, but not as good as my new altec lansing's.