When buying makes sense
If you work regularly with large-format glass or glass, buying is worthwhile after just a few uses. A good device lasts many years, and replacement pads extend its service life.
Buying also has the advantage that you are familiar with the device and accessories, and the batteries remain compatible.
When renting makes sense
For a single project or a one-off large job, renting can be cheaper. Especially for very heavy panels that require an expensive special device.
When renting, check the condition of the pad and the display before using it.
Comparison
Rule of thumb
If you work with suction lifters more than three or four times a year, buying is usually cheaper. For a one-off project, renting is often sufficient.
This guide is editorial and general. For safety questions the manufacturer datasheet applies.