I wouldn't think there would be any debate as to whether a higher quality component could effect a change in the sound of a speaker, namely the crossover circuit. Just as the world's best amps and electronics do not skimp on .10 cent capacitors. It is relatively well known in the DIY community that the higher quality capacitors do change the quality of sound in the speaker. Just as you would use the highest quality foods in your meal you can definitely taste the difference. I know I can anyway. Now soldering and wiring is not an option for everybody, and in no way should someone change something they are not comfortable doing. But who ever said experimentation is a bad thing? Another great link is http://www.loudspeakers101.com.