Whatever you choose, put some anti seize lubricant on first...newly made stainless bolts can gall....in effect weld themselves before they are fully seated...then life as you know it ends, while you spend all your time figuring out how to remove them
The competition are all water cooled so are definitely quieter....and two horse power is two horse power. For me, Honda has always been a byword for reliability
The other advantage of the Honda is that it’s air cooled.....imagine you are trying to get off the beach in a strong surf...every time you get the boat into deep enough water, by the time you’ve started the motor....you have been washed back on the beach....the Honda can be started with the boat...
Whoever ordered the investigation (regardless who prompted the request) is responsible for the bill... and the owner of the boat at the time is responsible for the marina fees. I assume that this is you ?
The time to negotiate was before.....such as, if there isn’t any issue you pay all costs.