I have the Axiom M60, VP150, QS8 speakers but have never demo-ed a properly setup 5.1 system of comparable value, so my feedback is somewhat biased.
As a whole the package represents great value for the quality vs price consideration. As mentioned above, if you go through the Factory Outlet and get the package discount, the quality vs price value gets even sweeter. Based on comments about Factory Outlet speakers in this forum, people are hard pressed to find defects that caused the speakers to end up in the outlet store, with most not finding any. That said, there are many internet direct brands out there which represent similar quality vs price excellence. AV123, Aperion are a couple that come to mind, but with a little research you sould find may more.
When listening to 2.1 sources on the M60's, I am often left with a smile on my face. Be it details on DOTS or A Perfect Circle, or boom in techno. I cannot imagine needing a louder speaker or wanting a better sounding speaker. Some folks feel the M60's are bright, but IMHO, with proper placement, calibration and room response correction, this problem should not exist. Essentially, once properly setup, you will hear what the source sends out and gets amplified. Whether you like it or not goes into the realm of personal preference.
When listening to 5.1 sources the M60's and VP150 have good sound stage with the LCR blending seamlessly. Sometimes I have to put my ear near the VP150 to make sure it is playing. The QS8's do a great job in creating a sound envelope. It is very apparant when they are not playing or a movie does not make good use of the surround channels.