15 to 20 hp new outboards help.
One thing to think about in this HP. Is the fact the 15 and 20 are based on the same engine in most cases. I would expect the 15 to perform well but the extra $ for the 20hp will get you very little.
If your boat is max 20hp you are limited to these small displacement engines - around 350cc. If you can run a 25hp you'll see a big difference in performance and acceleration. In the 25hp class the ETEC is by far the clear winner on performance and has had a great reliability record. Also offers features no one else has.
I know there are those who will argue with the opinion ETEC is superior in this class. If they have experienced all the new products I feel most would agree. I'm not saying ETEC is better in all hp classes.
It's been virtually a trouble-free engine & has been a consistent 2 pull max start even after winter hibernation.
Another variable to consider is the alternator output if you have a bunch of electronics-GPS, VHF, fish finder, stereo etc.