Unreliable? These Raptor motors have been used in several boat brands for years and seem to be near bulletproof.

As far as Makai and 400 I think a lot of that will depend on where you live (altitude) and what kind of watersports. Need more info. I know people with the Makai and 400 and they have no issues with power but they live near sea level and use the boat for surfing.