I would disagree with that statement... If you go back to the days of Pro-Logic, yes, surrounds were limited to a point where you could use very different speakers than your L/C/R's. Today, the high resolution formats and the amount of information used in the surrounds, you'll head the different right away. Use timbre matched surrounds to your fronts (best would of course to have all identical speakers, but that's not always practical)
