There aren't any commercial circular saws that are bigger, but one other matches its size, the Skil 16-5/16-inch Magnesium Worm Drive Circular Saw.

Pruning saws are ... spring or cut thin branches off bigger logs, it can do the trick perfectly. Even more, Milwaukee tends to be more expensive, so if price is a concern, then Makita -- or ...

Milwaukee offers three different pole saws, as part of its M18 Fuel power system. Makita, on the other hand, offers five.