I have a KEF egg speaker set-up and use it with both the KEF and a REL Q40 sub. I would like to replace the front L/R KEF eggs and the KEF sub with some floor standing speakers and keep the other eggs for the centre and rear channels. The REL sub will be used for the bass as per my existing install. My amplifier is a Yamaha RXV 630 RDS. Has anybody done this already and able to offer advice on possible speaker selection?