The Etec is a great motor thus far. I still think they are in the guinea pig stage though.
Evinrude put larger gearcases on the smaller motors for durability which in turn makes them a bit heavier per hp size. The pistons are made from the same material (some sort of ceramic) that the space shuttle has for the heat shield. Technology with these motors now can produce nearly 100 hp per each cylinder vs the older tech. that was limited to 35 hp tops per cylinder. Too much to list so I wont elaborate any longer.

I know two people here locally that have the Etec that really like the motor. 3 years no need to touch them. No service or anything for three years is outstanding!!

Performance, I believe the pretty smoke every other brand on the market if you compare them by size.

Id say get one!