Highlight: It has the fewest emissions of the engines tested.
My two cents: "This is a high-quality machine that would serve a pro landscaper—or a homeowner with a lot of chores—very well."
Tool stats: 9.5 pounds, 27.2cc, 10,000 rpm (maximum), 16.37 in-lbs of torque; does not accept other brands' attachments.
Price: About $240 for the engine
String trimmer (about $99): 4 stars
Pole saw (about $209): 4 stars
Tiller (about $179): 2 stars