I'd suggest adding Yamaha to your list. Far more reliable than other brands mentioned and way less weight than Honda. I also find the Honda an incredibly noisy engine. We have had a 9.9 Yamaha on our 27 Catalina for years and it has been a great engine. Pushes the boat along at about 6 Knots at under 1/2 gallon/hr. Spare parts are readily available as well. Night0wl is correct in saying Nissan, Tohatsu and Mercury are the same engine. I also run a Yamaha 50HP on our commuter boat. In our marina Yamaha's are on 80% of the commuter boats.
I dont think Suzuki is a re-badged tohatsu and from the few owners I've spoken to would consider adding this engine to my list as well.
Last edited by delite; 12-27-2011 at 04:32 PM.