You can't go wrong with either. The Japanese fisherman have been using Tohatsu/Nissan outboards since the 1950's because they were cheap
and reliable. The company has been making engines since the 1920's. Honda came along in the early 60's. and started producing their own line of outboards. Both companies have built a solid reputation for reliability
I am a huge Honda fan due to all the engines that I have owned, from Generators, lawn equipment
,..... to my Gas powered air compressor
. Quite a few of my friends who have re powered their boats over to to 4 strokes run with Honda's and Tohatsu/Nissan's. I spend a lot of time with these guys and have not heard any regrets from either camp.
My islander 26 came with a 2002 M8B Tohatsu that had not left the marina in 4-5 years. I needed to move the boat 22 miles to my present location. The onboard fuel tank
was severely contaminated so I bought a 6 gallon portable tank, and fuel
line. It started within 2-3 seconds and we were under way after letting it run and checking it over. The M8B pushed the boat along at a 2/3 bell for about 6 hours without missing a beat. I have about 15 more hours on it since. The outboard
is probably worth more than my boat considering it's present state.
Yamaha - Honda - Tohatsu all make great outboards.