what's to most important component for movie and music that has the highest impact on quality? in other words which one will make a difference? commonly people will start buying 1. TV 2. DVD 3. RECEIVER + Main 4. Sub 5. Center 6. Rear/Surr. 7. SACD 8. bigger amps 9. so on and so forth. i read alot of folks say speaker is what needs emphassis on the most. true? what about receiver? and audio/video source? cables and interconnects? without further confuse anyone; my question is out of speakers, receiver/amp, audio/video source, cables/interconnects which has the most impact on performance/quality when change/upgrade. i'll leave money out of the equation for now.