Cost of RF3/RB5 in General Klipsch Info Posted August 29, 2001 Actually the RB5 costs the same becuse it is a better speaker. First off, the cone on the rb5 is of higher quality than the RF3. also the RB5 is much cleaner and plays more acurate than the RF3. So if you want a thumping bass louded speaker get the rf3, if you want a real high quality, clear audophile speaker get the RB5. As for the bass just get a sub woofer with the RB5.