I have moved your post to the correct forum, this is clearly not an introduction but a question about DJ gear. Please take care to post in the correct forums.
Secondly, it pays to give a more descriptive title for your post. Things like “Information request” don’t really attract readers.
Thirdly, I would like to give you a tip to NOT publish your email on open forums.
On-Topic: Unfortunately this is not the way this works. Picking a controller is a highly personal matter and dependent on things like workflow and from workflow to software choice to budget to a shortlist of 2 or 3 controllers. There are many (recent) posts on the subject of chosing your (first) controller.
All the controllers you mention are high quality gear. They also all have their particular features. Since you are the one that determines if having a certain feature is necessary or if the lack of a certain feature is a bad thing, we can not help you with that choice. Clearly Pioneer is always on the higher end of the price scale. Denon is good value for money and usually built like a tank. But that is meaningless if the controller doesn’t fit your needs, in which case it suddenly becomes very expensive.
More generally speaking, you have not told us a single thing about the kind of DJ you are, the kind of genres you play or what you are trying to achieve. All the controllers you mention are high-end. They are in a bracket where you should only buy them if you know enough about them to know if they fit your workflow and you should already know what software you are using/will be using. If you are actually a beginning DJ, I strongly suggest NOT getting one of these controllers as they are way to advanced to start with. If you are not a starting DJ, I suggest you follow our plan for picking a new controller based on the experience you already have.
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