I travel a lot and do not like carrying things, so xreal and phone are more than enough for coding while going day long, easily augmented with a small power bank (unlike a laptop), with all of that fitting in my pockets after I drop my luggage at the hotel. Most my colleagues have macbooks and while they have good battery life, it is no comparison: the search for places with power outlets starts when I am not even at 50%. It is not an apples to apples as I do a lot of compute in the cloud, but even with that on the laptops, they still last a lot shorter and you cannot plug in normal power banks.