The Smart Drive is great. The big negative for me is that the machine is so cumbersome and heavy, particularly going up steep hills. More than once, the back wheels spin and cannot seem to grip on these inclines. Previously I had a Sears mower with front wheel drive, and I think maybe I should have gotten front wheel drive again. The Sears machine was much lighter, too.
As I side note, I have to tell you my buying experience. I "purchased" the Honda walk behind at Home Depot. When I got to the parking lot, I found that I was having trouble fitting it into my car. I went back inside to customer service and it seemed that nobody was particularly interested in helpiing me. The attitudes at Home Depot were not conducive to establishing a rapport or building a relationship with the customer. So, I said, "The Heck with it," undid my purchase...went across the street to a smaller, local competitor and bought the Honda there for fifty bucks more! And you know what, I do not feel bad about it. The machine was delivered to me for free the next day. Now I am looking forward to better service from this smaller entrepeneur.