X3?  Prolly not for me.
 
I have, but do not use, the X series. Too many menus (filters, note values, take lanes, meters,...), Extra clicks for most everything, Wasted screen space, lack of user-configurability, reduced quick feedback of state,... The X series requires more attention to the interface.
 
Example:
   8.5: peripheral vision awareness of note values,...
   X:   requires movement and focusing of eyes on menu header to READ values,... more attention to the interface.
 
Example: in my wood workshop I place tools on the bench for quick use.
The X series way: all tools are automatically replaced in the drawers, and cabinets, and on the wall, requiring more attention to finding the tool needed.  Wasted time at best.
 
The "de-cluttering" mania used a too-wide brush sweeping away many reasonable bits: i.e., small-button bars,...
 
Putting note values on a menu is a clear example of mental hysteria and mob behavior. No one with enough power said, "That is stupid."
 
FYI: It took 5 numbered versions (6 years) for Sonar to get configurable menus and taskbars.
 
CW managers: Reducing the price of upgrades was a major stupidity. There are ways to increase user-base and make a profit. But, reducing price is not one of them. It attracts users with expectations of more for less. Results: the company has more users to care for, and less money to do so. Not a good strategy.
 
A good strategy is to create a cohort of supporting businesses. When others are able to make money selling add-in products promotion costs are reduced, user-base is increased, the primary company can focus on the core product and expertise.
 
VST is a great example of product promotion through 3rd party participation. Pro-channel, not so much.
 
Example:
Reaper:
       proprietary without secretiveness, open to 3rd party support
 
       configurable everything
 
       programming interface, and user macro language, attachable to 1-click buttons
 
       extensive selection of user created GUI templates/skins/themes ( with sizable faders,...)
         (take a look at the houseofwhitetie.com theme: a third party add-on!)
 
       a deep understanding that the user forum is the MOST important asset a business has, when used as such
        a constant dialog between managers, programmers, and users
           (CW: main forum page: announcements: last post: October 05, 2011)
 
I used products that enhanced Sonar's use (CAL extensions, macro add-on,...) that were thwarted by CW's managers unwillingness to cooperate. Bad business.
 
And the beat goes on.
 
(piece of crap forum software)