Thanks all for your feedback.
Emason, Mort, I have not found a shop yet that allowed me to test Marantz and Denon receiver in the same setup to compare and see whether the Marantz sound "warmer" or not..
Emason and Buckeyefan 1, you both recommend the Harman Kardon AVR7300,
it's more expensive so what would be the advantages over Marantz 8500?
I've also read some critical notes on the AVR7300's User Interface, see for example
http://reviews.designtechnica.com/user_reviews1880.html
Grtz Mark.