You may be sorry you asked,
@PENG .... this turned out way to long!
A few thoughts that may or may not be interesting or helpful
-I really enjoyed the Denon X8500 I had. No issues, ever. If someone wants easy setup, point and shoot usage, I still think Denon (or one of the major brands) is the way to go.
-However I did decide to switch to the Storm Audio MKII and for me I have no regrets.
-There is certainly a learning curve with the Storm, but it is not too bad getting it set up.
-In addition to automatic eq, I wanted something that could do more than 2 subs automatically and the Storm has DLBC, which is super easy to use and sounds great
-I wanted full manual eq so I could manual set filters if I wanted. There were times that I just wanted to manually eq something with a simple filter, and I couldn't do that with Audyssey. Now for example with manual filters, I can simply toggle them on/off to see if something sounds better or not
-Dr Toole, from my understanding, seems to favor EQing a speaker above the transition to be flat anechoic vs measuring your listening position, and auto EQing that. With the Storm, I can take speaker measurements from Audiosciencereview, for example, and EQ the speaker above the transition. So the combiniation of using DLBC below say 300hz and speaker eq above is a great combo. Or, I can just run Dirac full range and compare.
-Storm does dirac on multiple zones (zones can be mono or stereo). You are only limited by the number of channels you have. I believe Storm is the only one that offers Dirac on multiple zones
-Storm XT- With speakers that are not included in a format, storm will use those speakers. For example if you have a center height speaker or a VOG speaker and are playing an atmos track, normally these would be silent. With Storm XT they won't be. It will pull audio from the surrounding speakers. I am in the process of adding center height and VOG (already have wides).
-WebUI is very well laid out
-DTSX Pro-So many of the 16 channel processors don't have DTSX Pro and it is a really great with DTSX and DTS Neural X upmixer
-Upgradeable-Hardware upgradeable if needed in the future and Storm continues to support the MKI for example with all the features of the MKII
-Support is excellent. I have had to work with them on a couple of issues and they are very responsive and helpful.
So the Storm is a really good option if you:
-want 16+ channels, Dirac, DLBC, Dirac on multiple zones, DTSX Pro, Storm XT, Manual EQ, Speaker EQ (forgot to mention you can import from REW too)
-if none of these really appeal to you, then I would stick with the simplicity of a Denon
Sound quality-This is always the hardest to quantify with any certainty... I never had both systems up and the same time, impossible really to do multispeaker system switching etc,. So with all of that said, do I think it sounds better? I think it does sound better than it ever has in my room but I have changed speaker locations, subs, added a few more speakers etc. So it is impossible to be certain of course but sure think it does and it has been very enjoyable to use.
This was too long, sorry!