yes tastes do change. I know mine have as I've grown older and heard better and better quality equipment. I had Johnny Rutan come in and set them up properly. I was amazed at how he set them up, but they are really sounding great. It's amazing as to how great things can get with just a small adjustment here or there.
Taking the time to set up the rake of the Quatro and then getting teh bass right, should give you bliss.