I am looking to purchase a 5-8hp motor for a 12' porta-bote.<br /><br />What is the difference between Johnson and Envinrude brands?<br /><br />Is there a reason why the Johnson engines are so much lighter than the Envinrude, Honda and Nissan motors?<br /><br />What outboards are considered the best value for a 5-8 hp application?<br /><br />I realize this is subjective but any enlightment would help.