It's been almost exactly a year since Zodiac Pool Systems last expanded its line of Polaris-branded pool-cleaning robots, and it's now back with two more additions that fill out the top and bottom ...

The Polaris Freedom Plus pool-cleaning robot provided excellent coverage and showcased solid cleaning prowess during my testing.

Designed for in-ground pools of up to 36 feet, the Polaris 7240 Sport is a compact robotic pool cleaner that does an excellent job of keeping your pool looking its best, but it's short on features.