Man, I don't know.....I was a Marshall in David Fritts Z520C / G2 and I was not overly impressed with it. We rode around LaCrosse in it and it was fine but at the time, I had a '12 Z520 / Opti 250 and I thought my boat had a better holeshot. I drove his on his trailer too and just wasn't impressed. I have absolutely no complaints with my 4 stroke Merc and even if Rude was still in business and Yamaha was an option also, I would go Merc again any day of the week.