also keep in mind that when you are trying to match up ohm loads and available power, base you matching on the RMS ratings, not the peak/max ratings. You really only need about 1/3 rd of the RMS of a Sub to get it to work, but ideally you can line everything up at approximately RMS.
Most importantly, yes, better quality will sound better (typically), but there is a lot of truth to the words, its all in the install. I have heard some incredible ''budget systems'' but they were designed and layed out by people who know what they are doing to maximize the quality/output of the install.
life is too short to have any regrets