About Denon receivers being user unfriendly: I'd describe it as more complex than unfriendly. True, the manuals are not what they should be, but their mid - to - high end receivers are loaded with features not meant for novices or people who just want a 5-minute plug-n-play experience. I have a 3805 and 4306, and spent quite a a bit of time learning the ins & outs of setups. After finally getting things right on my 4306, I must say the results are well worth the effort.
Most of the higher-end AV receivers that I've seen on the market are equally complex just because of the sheer number of features.