I'm going to partially disagree with this statement.
It depends on how you plan to use the boat as to what is the "best" power.
My 1st exposure to the SC 16SS was my buddies, a very typical mid 70's boat with the OMC 70 hp on it.
With 3 guys in the boat just riding around it was fine, maybe even good as it just sipped fuel. BUT, if you were going to do any skiing, it was under powered. It just couldn't pop us out of the water. And I was a lot lighter back then.
When we got our SS16, and were looking for a motor upgrade, I got the (at the time) 4 cyl Merc 85 hp. (later prop rated at 75 hp) this turned out to be the perfect size, 66 CI, halfway between the OMC 3 cyl and 4 cyl. The Merc may not be everyone's idea of reliable though.
So for the SS16, you might want to consider the smaller OMC V4, the 85/90 version. Plenty of power and reliable (?) depending on your view.
There's nothing worse then an under powered boat.
Dan
"Power for your 16' SS, the 3 cyl Johnny/Rude 70 HP is the very best option for power, reliability and availability."