I would go for the Mercury ....I had a 55 Suzuki on my first boat although it served me well I was not impressed with service.
My first summer with the boat I ripped up the prop and had to replace the prop shaft it took 3 weeks to get the part back order from Japan.
My dealer dropped them a few yrs ago he says most parts were not stocked in North America.He got fed up and decided
to stick with Honda,Yamaha and Mercury.
was talking to him at the boat show it seems its the same old story always a hassle to get parts in .They are often back order.
Now I know Suzuki makes an excellent product but if you ding the motor its going to be a long wait.
May as well get the Mercury !!!