The Donzi 18 Classic 2007 vs Donzi 22 ZX 2006 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
Size is the most obvious dividing line here. The Donzi 22 ZX 2006 measures 22,0 feet overall (2006), giving it roughly 4,0 additional feet of deck space compared to the Donzi 18 Classic 2007 at 18,0 feet (2007). At 27 lbs and 38 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 — 350 hp for the Donzi 18 Classic 2007 and 350 hp for the Donzi 22 ZX 2006. 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. Fuel capacity breaks the other way: the Donzi 22 ZX 2006 carries 51 gallons versus 41 gallons in the Donzi 18 Classic 2007. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Donzi 22 ZX 2006 is rated for 6 passengers, while the Donzi 18 Classic 2007 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Donzi 22 ZX 2006 could be the deciding factor.
Bottom line: Choose the Donzi 22 ZX 2006 if your priority is putting more people on the water — it handles 6 passengers and at 22,0 ft it has the deck room to back that rating up comfortably. The Donzi 18 Classic 2007 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.