Focal over Quart any time. Im currently running MbQuart Premiums and would change for the triple way 165KRX3's any time over them, If i had the money, I find the Quart's being to birght and tinny even with the crossovers on -3. As for RF, Unless your going big bikkies with it then its not comparable to the 27KX at all. This is Audiophile gear not off the shelf stuff like what most of us are running. As in Alpine, Quart, Pioneer. Even Alpine Type X Pro dont make the cut for this im sorry. 137Db Navara