I've got the 2005 commercial size DR (17hp). So far no problems at all. It starts up easily everytime and has lots of power.
The advantages of the DR over a BrushHog, which is pulled behind your ATV are:
� The blade leads the way, not your ATV tires.
� There are a kazillion attachments, making it more versatile.
� It is easier to work in tight areas because it's not like pulling a trailer.
Here are the disadvantages:
� You have to walk behind it, so you'd better be ready to sweat.
� It can be tricky to turn on uneven ground.
� High price
All in all I love mine, but it's not for every situation. Be sure you know exactly how you're going to be using it. Then decide if it's the right choice.