Matching a deep vee Zodiac Medline Sundream 2010 against a inflatable rigid Zodiac ProJet 420 TC4 2008 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.
Size is the most obvious dividing line here. The Zodiac Medline Sundream 2010 measures 16,4 feet overall (2010), giving it roughly 3,4 additional feet of deck space compared to the Zodiac ProJet 420 TC4 2008 at 13,0 feet (2008). At 875 lbs and 904 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
Both boats share a closely matched power ceiling — 80 hp for the Zodiac Medline Sundream 2010 and 98 hp for the Zodiac ProJet 420 TC4 2008. 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 ProJet 420 TC4 2008 is rated for 6 passengers, while the Zodiac Medline Sundream 2010 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Zodiac ProJet 420 TC4 2008 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The Zodiac ProJet 420 TC4 2008 comes in at 9 lbs per hp versus 11 lbs per hp for the Zodiac Medline Sundream 2010. 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 Medline Sundream 2010 and 40 mph for the Zodiac ProJet 420 TC4 2008.
Bottom line: Choose the Zodiac ProJet 420 TC4 2008 if your priority is putting more people on the water — it handles 6 passengers and at 13,0 ft it has the deck room to back that rating up comfortably. The Zodiac Medline Sundream 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.