I’m satisfied with what I got from the Pro Max Plus 16-inch model, the build quality and performance are decent. It’s better than any of the Precision machines I’ve owned before, including the 7550, 7760, 7670, 7680, and 7780, in many respects. Plus, the 4K 120Hz Tandem OLED is wild, if you are not sensitive on OLED panel, don't miss that option.
In my opinion, if you’re looking for a true workstation-class machine, I would not recommend the ThinkPad P16 Gen 3. This model is heavily limited by its preset power limits and power adapter. The combined power budget is only 15W for the CPU plus 115W for the GPU. If you don't care about performance, P16 Gen3 is still acceptable.
HP ZBook Fury is probably another option worth exploring. Honestly, I don’t have any experience with HP laptops, so I can’t comment on it.