I thought I was pretty settled on getting a Denon 3805 when I started having a look at a list of second hand items and noticed a few high-end Receivers for sale for less money. These were things like the A1SE and A10SE, which are at least one generation old now in terms of technology. Can anyone say how these stack up against the latest models (i.e. 3805) in terms of sound quality. Are they good buys or should I stick with Plan A?