2.5 or 3.5 hp tender outboard

I've had a Suzuki 2.5 for years. Cracking wee engine. Pals have the uber noisy Honda air cooled, both work well but I prefer being a little quieter on the water.
 
I have both the Suzuki 2.5 hp four stroke and the Tohatsu 3.5 hp four stroke (Mariner and Mercuri 3.5 is a Tohatsu engine). I bouth the Suzuki 2.5 because I wanted a light engine; its 13kg and brilliant, will go on the plane with an inflatable 2.9 and me (15 st). The Tohatsu/Mariner 3.5 is much heavier and although more powerfull, the extra weight makes it difficult to move up and down the boat.
So you find the 2.5 has plenty of power. ? I'm debating at moment between a 2.5 Suzuki and a 3.5 mercury .
 
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