I will try to get my point across without sounding like a moron or seeming to disprove my point. As a user of a no-name 2.1 speaker system for my PC, I felt that you were spending too much money on your speakers, but you could be an audio freak, which is perfectly acceptable. Then, when someone said that you were missing out without the 4.1 or 5.1, you said you weren't too interested. That seemed to disprove audio freak part.
I feel that if you are going to upgrade your speakers, don't spend the money on the same type of speakers (2.1). Either keep your current speakers and pocket the cash (or spend it on something else), or get a nicer (more speakers) setup then you have now. I understand that the Klipsch are wonderful speakers, but with the 2.1 setup, they can only go so far in surpassing your current setup. Additionally, in games such as HL2 or UT2003, there isn't much time to stop and listen to the sound.
Finally, speakers are easy to upgrade in the future. That money could go to extra handfuls of HDD space, or to the next case model up, or to the 480W PS, or that stand alone DVD drive, something that isn’t practical to upgrade later.
Basically, I know that the Klipsch will be better speakers then your current ones, I just don't know if they will be $170 better.
However, if you feel that the Klipsch is what you want, then by all means buy them. I won’t think you any less of a person.
What's a signature? Oh, those words that show up after all my comments? I don't need one of those!