I have 2004 Sabre 150 Opti no jack plate and I ran both I perfer the 23 temp + over the 25 temp + for its handling the 25 blows out on sharp turns.For top end I dont have to trim the boat up as far with the 25 and it wants to chine walk when I am by myself more so than with A partner.I like to run fast so I learned how to drive the chine walk and no boat with A 150 has been able to touch me .You will gain maybe 5 mph with the 25 temp +.Terry