I'm looking to upgrade my reciever in the next few months, at the moment I have an old Sony Strdb-940 which only handles audio. The new reciever will have to handle video switching too. One of the avr's I was considering was the Onkyo 705, which has 3 component inputs and 3 hdmi inputs, however I've read that only 5 inputs are assignable. What exactly does this mean? Can I only have a maximum of 5 video inputs, even though there are 6+ connections on the avr?