Matching a inflatable rigid Zodiac Medline Sundream Zenith 2008 against a deep vee Zodiac Pro Racing 550 2013 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
On paper these two are close siblings in the size department — Zodiac Medline Sundream Zenith 2008 at 16,0 ft versus Zodiac Pro Racing 550 2013 at 17,1 ft. Weight tells a clearer story for trailering families: the Zodiac Medline Sundream Zenith 2008 tips the scales at 875 lbs — 181 lbs more than the Zodiac Pro Racing 550 2013 at 694 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
Both boats share a closely matched power ceiling — 80 hp for the Zodiac Medline Sundream Zenith 2008 and 90 hp for the Zodiac Pro Racing 550 2013. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup.
For family outings this is probably the sharpest distinction between the two. The Zodiac Pro Racing 550 2013 is rated for 12 passengers, while the Zodiac Medline Sundream Zenith 2008 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Zodiac Pro Racing 550 2013 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Zodiac Pro Racing 550 2013 comes in at 8 lbs per hp versus 11 lbs per hp for the Zodiac Medline Sundream Zenith 2008. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.
Top speed is rated at 42 mph for the Zodiac Pro Racing 550 2013 and 42 mph for the Zodiac Medline Sundream Zenith 2008.
The Zodiac Pro Racing 550 2013 is an inflatable design — lighter, easier to store, and quicker to launch from a beach or dock without a slipway. The Zodiac Medline Sundream Zenith 2008 is a rigid hull, which typically offers a more confident ride in chop and easier maintenance over the long term.
Bottom line: Choose the Zodiac Pro Racing 550 2013 if your priority is putting more people on the water — it handles 12 passengers and at 17,1 ft it has the deck room to back that rating up comfortably. The Zodiac Medline Sundream Zenith 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.