Why it's worth it
The CTMAST costs less than our top pick and still gives you dual speeds, an IPX7 rating, and a pole that extends to 53 inches. It's a little over a pound, which makes it the easiest one here to hold overhead.
That 53-inch extension is genuinely useful and genuinely rare. It collapses to about 12 inches for sink work and stretches long enough to reach the top of a tiled shower wall or a high patch of ceiling grout without a step stool. If you're short, or your shower surround runs to the ceiling, this is the one that reaches.
At just over a pound, it's the lightest full-size scrubber here by a wide margin. That changes how long you can work above shoulder height before your arm gives up. Combine light weight with a long pole and you get a tool you can actually hold overhead for a full wall, which is exactly the job that makes people give up on manual scrubbing.
From our review of 5 electric spin scrubbers for bathrooms, by David Sinclair, Managing Editor