Both the Donzi 28 ZXO 2008 and the Donzi 35 ZF Open 2013 are deep-V designs, both built in fibreglass, so the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

Size is the most obvious dividing line here. The Donzi 35 ZF Open 2013 measures 33,3 feet overall (2013), giving it roughly 6,3 additional feet of deck space compared to the Donzi 28 ZXO 2008 at 27,0 feet (2008). Weight tells a clearer story for trailering families: the Donzi 35 ZF Open 2013 tips the scales at 7 600 lbs - 1 100 lbs less than the Donzi 28 ZXO 2008 at 6 500 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 - 700 hp for the Donzi 28 ZXO 2008 and 700 hp for the Donzi 35 ZF Open 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. Fuel capacity breaks the other way: the Donzi 35 ZF Open 2013 carries 290 gallons versus 94 gallons in the Donzi 28 ZXO 2008. 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 35 ZF Open 2013 is rated for 10 passengers, while the Donzi 28 ZXO 2008 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Donzi 35 ZF Open 2013 could be the deciding factor.