It is quite easy when dealing with computer parts to assume that spending more money will get you the best overall result, and having higher number of cores or highest nominal frequency will get you the best performance; to me, the real added value of a professional is to warn you against these misconceptions and getting you to actually spend less money to get better result.
We already discusses the issue of high-frequency i9 vs i7 in notebooks, and i wrote extensively about the issues with X series intel CPUs in audio production.
Today i will briefly discuss another similar issue wit NVMe SSDs in notebooks and apple all-in-one products. All of these informations and the table were gathered from this thread at MacRumors
There are two main reason to choose the least power-hungry SSD instead of going with the fastes Samsung drives here:

1 Heat and power are the main concern in cramped spaces with a limited power budget; every watt of power is taken away from the CPU and added to the total heat that has to be taken away from the chassis to get the highest turb frequency out of the CPU. The drives will also throttle (reduce their frequencies) whenever they get too hot. A thermal pad can help in this situation, like the ones that are installed inside our Zbook machines .
This is made even worst using standard NVMe in Apple products as they do not support full NVMe power saving standards.

2 Most notebooks will not allocate a full PCIE 4x channel to the NVMe slot, and old macbooks will also usually only run at PCIe 2.0 speed, thus getting a maximum of 800mb/s speed anyway.

The guys in the MacRumors forum compiled this table for us, showing that the Crucial P2 is one of the lowest power SSD avaiable in the mass market while also being usually the cheapest, while still saturating the 800mb limit of the interface, making that the best choiche for the job.