If the engines you are looking at scan clear and run as would be exected - I would highly reccomend Verdo's on a CC and not look back

Pretty general comments from my experience.......

Verados are exceptionally smooth and quiet.
Auto start every time.
Great on fuel.
Very heavy.

Optimax are much lighter.
Use more fuel.
A lot noisier.
Slightly better performance.
Can diagnose and service more easily.

I think both are great engines and you can expect longevity either way. I am on my first ever Verados and love the silent operation and couldn't be happier.

RR

I was told that there is no difference between the 225 and the 275 except for the ECU. Is that true

I'm considering a boat that the owner said that he swapped the ECU's on 225's for 275's. What are your thoughts on that?

ECU's are everything these days - Whipple industries has a program that will pump out another 140hp (stage 2) from a 4cylinder 200 Verado (on high test)