I have just swapped my Marantz SR7001 for an NR1602. Aside from the Airplay, which is a nice little feature that goes nicely with my iPad, and Audio Sync which is a real bonus, there's not a lot of difference between my old and my new amp. Sound is different, perhaps less warm but I cannot say any better or worse. The SR7001 when new was circa £1000. The NR1602 when new was circa £450. I paid nowhere near for either, incidentally. Both these amps are driving Monitor Audio Bronze floor standers and surrounds, as well as a Monitor Audio sub. I have 1 source, a Windows Media Centre, and my display is a 50 inch VT30. Frankly I'm really happy with the sound, and the video. What could I expect to see or hear if I upgraded to, say, a Yamaha RX-A3010? I'm interested to know how much better it can get, if I don't upgrade my speakers or display.