Thanks for the answers.
My question is whether I need to buy the EDU version to program the robots with ROS.
The Go1 pro, on this page, has several tutorials and videos showing that it is possible to program it with both ROS and MQTT. The go2 pro version has nothing.
I contacted unitree, and they informed me that only the Edu version of both is programmable, but its value is much higher.
I believe that the best option, given the amount of material on the internet, is the Go1 pro.
thanks.