I've settled on purchasing an Exmark Metro 21" for the upcoming season. However, I can not decide between the honda or kawasaki engines. I'm leaning toward the honda but have a couple of questions: 1. Your 2008 brochure lists the honda powered unit as having a top speed of 4.5 mph but at the end of the brochure, the honda powered unit is listed as having a top speed of 4.1 mph. Which speed is correct? 2. How is the honda, in terms of power and torque, in comparison, to the kawasaki? We have a lot of wet, lush spring growth in the spring and need power to cut through it. 3. The honda powered unit is $200 more. Is the honda engine that much better?