The Power Smart PS10 Chipper Shredder is what you need for your small yard. It can mulch at a ratio of 20:1 and it is very easy to move around. It effortlessly shreds leaves and twigs. Check out my review.
In order to determine the kind of riding lawn mower you need, you have to get to know your yard a little better. Then you get into the specific technical details of the mower that will be right for your lawn. Check this guide to buying a riding lawn mower.