hello all.<br /><br />I am a new boat owner and need to purchase a 150HP motor 25" shaft for my boat. I want to stay with Mercury, so I can save some $$ on extra already on my boat. I am looking at the following series for Mercs. Any recommendations would be appreciated.<br /><br />150HP XR6 25" <br /><br />150HP EFI 25"<br /><br />150HP Optimax 25"