I just bought a yamaha RXV-440. Now I have a chance to maybe get a HK AVR-230. Would this be worth it? Reason I want it is it has preouts and S-video inputs and more digital inputs. But would I notice a sound quality difference at all? I have heard HK is more powerful than most units at its price point. The other thing I could get would be an infinity Primus 10" sub. I have a big room though.