Re: Price vs. Performance
yes but if I have a $20K source and play them through a Sony boombox's speakers you have to agree that the cheap speakers are impacting the sound more than the player. No source can make bad speakers sound good. Where as there are speakers that make even bad sources sound palpable.
I see your argument and understand and even agree with your point. However, speakers do play a large part in your systems overall sound.
I would argue that more than speakers or your source, it's your listening environment that is going to make the most difference in your overall sound.