Mercury had some Opimax issues early on with pre mature power head failures. Here is a related post
http://www.njfishing.com/forums/showthread.php?t=41225 . In fairness, all the manafactutures did with their early new high pressure injected 2 stokes. Yamaha with their HDPI and Johnson/Evenrude with Ficht. Most are now leading with their 4 stokes with the exception of Johnson/Evenrude who replaced Ficht with Etech
None of these above high pressure 2 stoke engines would be my first choice and most of the boats you see with these engines are usually selling for way less then their peers with 4 stokes because of the perceived issues.
