I disagree and mismatch bookshelf has worked for me. L/R JBL Stage A 130, Center is psb Imagine XC, 2 surround speakers are POLK S-15, Subwoofer is Klipsch R-100sw. My area size is 10 X 12 with front listening/viewing distance at 7 feet. The 2 surround tweeters are 22" above ear level and slightly behind my ears. I watch a lot of DD movies and when I listen to streaming MP3 music, the AVR audio is switched to "Virtual" Front speakers are 7 feet apart as are the surrounds. Would my ears be that acute if all the speakers were same mfg matched? You be the judge. I am engulfed in SOUND all around. The JBL and Polk have pretty similar specs and weight. I matched all with similar specs, but the center channel being special.