With my 115 I consistently get right at 39-40 mph, but I have seen 45 on my gps when conditions were perfect and I was low on gas. Check the honda weight before you buy it if its like my 115 its a PIG. It is a great reliable motor that sips gas and is quiet but I believe its 100 lbs heavier then the next lightest motor in its class.
Overall a great multi species boat, but I will be looking to sell mine before next summer to fund a new boat as the deep v limits me a bit in my area due to shallower launches and smaller bodies of water. I think you will really enjoy the model. If you have any specific questions let me know.