Long story, but following some issues I'm returning my one year old Yamaha HTR5550 Receiver to RS for exchange or part exchange. I originally paid about £250 for it and I'm looking for something that RS will sell in the same price bracket or a little more, say up to £300. I've been looking at the CA 540R and Yamaha RXV640. There's not a lot of info availble on the CA so I was wondering if folks could give me their feedback/experiences of either. Cheers for any help.