12V and 24V reels keep the driver remote and the strip safe to handle. They are the right default for cabinet and cove work, where runs stay inside 5 m to 10 m and the driver can sit in an accessible void.
48V board options hold output across a 20 m single-end feed, which is usually where a 24V layout would need a second feed point and a cable route through the ceiling.
AC 220V and AC 110–220V strips take mains directly, so no driver is needed at all — at the cost of a longer cut interval (83.33 mm to 500 mm) and Ra > 80 rather than Ra > 90 on the white range.
Related series
High voltage AC