for what you're planning to do mowing, save some $$ and get an used 30" snapper RER.

This brand generally holds up well for most home owners. Engine parts such as filters are available from the mower dealers, but probably will not be found in places like Lowes or Sears. Kawasaki has top quality engines. Aftermarket blades are less expensive and fit well. The 48 inch deck is a little more difficult to remove than 42 inch decks because of the belt tension that is applied all the time. The electric clutch is slightly easier to operate than the manual blade controls.

The seats on this brand was redesign to sit higher. Because of this, the clutch pedal is harder to reach. Make sure you evaluate this before you buy.

This model is very similar to the riding mowers sold in Sears except Sears models have Briggs engines.

Husqvarna (formerly Electrolux, AYP, and Roper) makes pretty good stuff. In recent years, they've made the Sears Craftsman line, but for 2010 MTD is also making some of the Sears brand. I've had a Husqvarna for 3 years (mine has Briggs & Stratton engine), and it has served me well - no problems. The Snapper rear engine rider that rcbe suggested is a great machine. Be prepared to perform the specified maintenance, and do it religiously.