Currently I use the Wacom Intuos Pro, but considering an upgrade to Cintiq, but alternative would be to upgrade my iPad to Pro with Apple 2 pen. Not in a hurry as Intuos is fine and can wait for the recently announced Sidecar to pan out. I did notice that Apple failed to include the heavy hitters - Corel Painter and Adobe Photoshop /Lightroom - as programs that work but not certain what the generic "Painter" is they listed as they were more with other specifications, such as Corel Draw as opposed to simply 'draw'. A Sidecar competitor, Astropad among others has been around for a while so hopefully someone has used an iPad with Painter via Astropad. Is the iPad via Astropad (or potentially Sidecar) a viable competitor to Cintiq? The Cintiq vs Ipad reviews I see online never compare them appropriately. Invariably, they will review the iPad in terms of iPad apps and whine about can't compete with the full blown computer programs, rather than compare as an input device for a Mac as the Cintiq is an input device for a PC or Mac. Would like to know what your impressions are as theoretically see significant advantages of the iPad but question the performance in the workflow operations.
I personally enjoy using a XP-Pen Graphic tablet ( like wacom ) with Photoshop and Lightroom. I had the XP-Pen Artist 13.3 Pro ( https://www.xp-pen.com/product/464.html ) . Works great for my needs.
I have also enjoyed using Astropad with a Mac, iPad Pro and Apple Pencil but that's a bit of a niche setup. I just got the new iPad Pro 11” and downloaded Lightroom this past weekend to try it out. It’s actually pretty fantastic to use. It has the same feature set as Lightroom CC on desktop, so if you need some of the Lightroom CC Classic features, just be aware.