I shopped at HD last week for a new Toro mower.... I was initially going to get the "20371" model. It had a Kohler engine (149cc). They also had a "20331" with a Briggs and Stratton Quantum engine (190cc). Every thing else was the same on both models. I chose the "20331". I beleive the 20331 is last years model. Did I make the right choice? Both were priced the same and had the same warranty.