The purchase decision in this category is not really the device - it is the tape. A label maker is a razor-and-blades product: the machine is bought once and the cassettes are bought forever, and the ecosystems are not interchangeable. What trips people up is assuming that every Brother P-touch takes the same tape. They do not. Brother runs three separate consumable lines, and its own specification pages are explicit about which machine takes which.
TZe is the one most people mean. Brother describes TZe tapes as laminated, and rates them water-resistant, fade-resistant and chemical-resistant for indoor and outdoor use, calling out cable labelling specifically. TZe runs from 3.5 mm up to 36 mm depending on the machine, and it is the widest-stocked laminated tape in the US. Btag is Brother's newer line: also laminated, but a single ~1/2 inch (12 mm) width in 17 colours, and only the PT-N25BT uses it. The M series is the one to watch out for - Brother's own spec table for the PT-M95 records it as non-laminated, direct thermal, in 9 mm and 12 mm only. DYMO's D1 is a fourth, separate ecosystem; DYMO lists the LabelManager 160 as taking D1 Standard and Durable tapes in 6, 9 and 12 mm.
The second decision is how you compose the label. Every device here has a QWERTY keyboard - including the PT-N25BT, which is sometimes described as app-only and is not. What the connected models add is the option to type on a phone or a computer instead, which matters more than the spec sheet suggests: the most common outcome for a home-office label maker is that it is used enthusiastically for one afternoon and then never again, and the friction of composing a label is the main reason.
One practical note from people who do this for a living. In r/sysadmin and r/networking threads about cable labelling, the recurring warning is that standard tape splits when it is wrapped tightly around a cable and then handled; the fix is Brother's flexible-ID TZe tapes or heat-shrink tube, not a different machine. If cable runs are the reason you are buying, budget for the right cassette as well as the right device.
We research these from manufacturer specifications and published documentation. We do not run print-durability testing, so where a claim about tape construction is the manufacturer's, this page says so.