Since no one seems to want to read my earlier post I'll keep this one short.
"the amps just suck [on the ipod]" - no it doesn't
"aux sucks" - no it doesn't
"DAC on the iPods aren't that great either" - no it doesn't
"The Denon has it's own digital hookup for the Ipod" - no it doesn't
I've posted probably a books worth of info for those that care to search for it.