Hi. I have a 2003 560 Quinnie Classic runabout. I did have a 130hp Yamaha 2 stroke which would max out at 70km/h.
I know you've asked about different motors but I'll give you my story for additional context.
When i repowered i looked at the maximum 115hp in Suzuki but ended up going for 90hp instead. It's a smaller block which at the time was about $2500 cheaper. For insurance purposes I wasn't interested in going above maximum rating.
I average about 0.4l/km and rarely wish for more HP. It's only glass out days that i can go top speed of 55km/h and i find that fast enough for my style of boating. For the rest of the time i enjoy the fuel economy.
Sent from my C6903 using Tapatalk