I currently have two computer speaker systems. I am not knowledgable of speaker terminology or speakers in general. Can someone tell which one to the two I own would be the best for my computer. The first is a Altec Lansing ADA880 (a few years old and now used on my new computer) and the other is one that came with my new Dell computer, (XPS700 w/X-Fi PCI Sound card) it is a Dell MMS 5650 5.1 surround 6-piece set. I have read the tech stuff on both but it means nothing to me. Thank you.