I have about 2 acres of lawn, mostly zoysia grass (which I love) and have been through several mowers: Simplicity, John Deere, and two Husqvarna's. The smaller Husky (pressed deck) is getting older and needing more repairs. In ya'all's experience, what's the best mowing and most dependable (maintenance free) 48" riding mower? I have plugger aerator and dethatcher that I pull twice a year. I would appreciate your recommendations.