OK, I received my 3010 today. First thing I did was hook it up and run Audyssey. BIG mistake. It just did not do it right. It would not send the proper sounds to my heights, which then made it belive I did not have ANY heights (though I heard the muffled sounds through them). It was a disaster. I decided to do a factory reset and then allow it to update the firmware before doing Audyssey. About an hour later the firmware update was done and I could start.
As for my setup, I am have an HTPC and a Wii, as well as a projector and a plasma TV. I am runnign a 9.1 system with front heights. It is also a rather peculiar setup. Front three mains are Paradigm Milleniums, 200s for the left and right and the Trio for the center. I am using the outer two speakers of the trio wired up to appear as one 4 ohm speaker.
All surrounds are Axiom On-walls. M0s for the heights, M2s for the rears and the side surrounds are an M3 and M2 wired to appear as one 4 ohm speaker (then repeated on the other side). This is because of the shape of my theater room, so I need to setup side speakers like they do in a real theater.
Audyssey ran in a different pattern with the new firmware - chose the next speaker differently. It easily found my front heights. I ran 6 locations and told it to calculate. I wish the cord was 3 feet longer, then it would be perfect. Audyssey setup was easy and fast. Compared to the Denon 3808 it was much faster during the calculations, but technology has marched on in the last 4 years. I find the GUI a little confusing. The Pioneer VSX-1120's GUI was easier to find things in. I found myself referring to the manual to do simple things like turn on Neo:Cinema and how to turn on the dual display output.
HDMI-CEC works, but I can only get it to work for the primary output. I like controlling the AVR with the video sink - so when I turn on and off my projector, the AVR turns on and off. I also have a plasma TV that I want to do the same thing, but right now it does not. I have to look at the controls for the plasma again to make sure I have it turned on properly there.
UPDATE - Only the Primary HDMI Out is HDMI-CEC aware.
The video is cleaner on the Onkyo than the Pioneer. I did not really expect too see a difference, since I am using a HTPC for my video source, but I was pleasantly surprised. I was one of those who said "blah blah blah, better video, blah blah" but I was wrong, the video really is better.
Audio - now that is where this baby shines over the Pioneer. The clarity of sound is amazing and the surround sound is simply divine. Listening to the Book of Eli farmer house fight scene was a banquet for the ears. It really was a night and day difference over the Pioneer. The Pioneer is no slouch, but it is in a different category than the Onkyo. Using my slowly fading memories of teh Denon 3808's sound, I would say the Onkyo definately beats it in the surround category as well as the cleanliness of the sound. This is most likely due to the Audyssey XT32 in the Onkyo (the Denon had a base Audyssey which was amazing and the Pioneer has its own far less capable system). I waited to watch the Steeler's game until tonight and wow, it is like being in the stands! At one point I had to turn down the TV because the fans went wild! NEO:X is far superior to PLIIZ Heights IMO. NEO:X gave me a far larger sound stage than PLIIZ ever did. Quite possibly it is also Audyssey helping it out, though I really do not care if it is as I am happier now.

When I start a show, skip forward 30 seconds, etc., the sound starts out at a low volume and ramps up. This is independant of the "have to wait to resync" lack of sound that sometimes happens for a moment.
UPDATE - This was caused by Audyssey's Dynamic Volume. I have no idea why it would act this way, when it did not on the Denon 3808.
I am quite pleased with the Onkyo. It is a huge jump over the Pioneer, and a very good improvement over the Denon. I do miss having a paper manual, the manual on the Onkyo only comes on DVD.
EDIT: Clarity of sound is one of the terms I was looking for. The Onkyo is a large jump in sound clarity over the Pioneer and even over what I remember of the Denon (though that has been awhile now).
Edited by cybrsage - 8/21/12 at 10:57am