We have a dead Pentair Warrior SE. A big disappointment that worked fairly well for just over 2 years, the warranty period, then died the usual way. Should I buy another Maytronics robot or will it just die in another couple years? The guys at Leslie's where we went to look at them say Maytronics has solved the problem of motor burnout, but I'm skeptical. Opinions? If not Maytronics, what else is the best choice?