We got our zodiac pro 9 man last summer (new) and have a 40 hp mariner engine on it.
We think it is great, but unfortunatly can't really give any real advice which compares it with anything else as this is our first.
It does about 28 mph with 4 passengers, and up to around 36 with 2.
We fitted it out with a jockey seat and a bench seat behind. It is pretty smooth regardless of the conditions. We are based in Scotland so we don't see "good" conditions too often!
If there is anything specific you want to know give us a shout.
