I am looking into purchasing a wholehouse generator. Just curious as to others thoughts on the different brands here. Looking @ 20kw generator. From what I have read else where Onan/Cummins is probably the better of the three. As far as Kohler vs. Generac I keep getting mixed reviews and I am sure some of them are biased opinions. I am aware that Generac controls about 70% of the residential market but, they are also about 10% less. Curious as to wether or not anyone here has personal experience witb them or not?