The Kensington StudioDock is one of the most exciting iPad docks in years, because it turns Apple's current tablets into desktop replacements - at least as far as that is possible with iPadOS. If you work a lot with the Apple Pencil or can make use of the ports, the high-quality but expensive dock is definitely interesting.
https://www.notebookcheck.net/Quick-Review-The-Kensington-StudioDock-transforms-the-iPad-Pro-and-iPad-Air-into-a-mini-iMac.529859.0.html