Looking at purchasing a new Ferris SRS Z2 52" stander, but am stuck at which engine to pick. I have a Ferris SRS Z1 36" stander with the 19hp Kawasaki, and have stuck by Kawasaki with all my equipment with very few issues. I haven't been able to see any recent threads regarding the Vanguard Oil Guard EFI engine VS Kawasaki Carb, so could anyone please tell me which one they prefer? I dont mind changing my oil twice a year, so the Oil Guard isn't a big factor in the decision. Both engines on the machine are the same price.