a desktop will give you more for your money
but if mobility is an issue, here is a listing of threads from the last year.
Note... there is no "best", ... but here are opinions
https://community.esri.com/search.jspa?q=best%20laptop&after=year
Requirements....
ArcGIS Pro 2.6 system requirements—ArcGIS Pro | Documentation
PS
I use a fully-loaded Surface Book 3
I would recommend buying something that has a good feel (keyboard, mousepad, screen) to it as you'll probably be spending quite some time on it. If you're traveling a lot weight, battery life and robustness will be relevant to you as well. Specs above are what you would typically buy for GIS/data science and the Surface book 3 is on my short list as well: it is one of the best machines currently available. One recommendation to definitely consider is using two physical harddisks: one for OS, one for storage (massive difference). Good luck shopping!