In preparation for the arrival of Mojave & the death of my 32-bit apps, today I bought a 250 GB Samsung T5 ultra-portable SSD & cloned my MacBook Pro’s SSD to it. I then removed all the Setapp-related stuff from the new drive & reinstalled owned versions of the essential apps that were replaced by Setapp on the internal drive. Next I ran DiskWarrior to sort out and directory inconsistencies.
It’s such a tiny little thing, weighing in at 51 grams & is roughly 74 x 57 x 10 mm in size. It has a USB-C port & USB-C/USB-C plus USB-c/USB-3·0 (USB-A) connection cables.
It is apparently one of the fastest to read & write of all currently available small SSDs around.