Unless you want to spend a LOT on top of the line gigaworks, get a real stereo and some real speakers, personal preference is JBL Studio series. I have a set of inspire for my wifes machine, 5.1, and they are alright, but nothing compared to my 12" JBL towers and 8" surrounds
Bass on any of those systems will be overly boomy unless placed properly, and they tend to accentuate the highs and lows more than having a balanced output. If they are THX certified you'll certainly be better off, but they still won't compete with a THX certified home stereo. THX does not necessarily mean "best".