I've got Denon AVR-X8500H several months ago and really satisfied with it. Yeah, it costs $4000 and maybe I had to think twice before buying anything. By the way, I see that the original blog post is opening without any problems, but the commentaries are still the same as here. And I'm curious if it's made by the one of WordPress plugins? I've seen the same option on https://themeforest.net/item/masterstudy-education-center-wordpress-theme/12170278 that is made for educational blogs mainly. It's a very interesting idea mixing both forum and blog together.