When two boats share the same hull type — in this case both the Mariah DX253 Deck Boat 2007 and the Mariah G23 2009 are modified vee designs with fiberglass construction — 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?
On paper these two are close siblings in the size department — Mariah DX253 Deck Boat 2007 at 25,0 ft versus Mariah G23 2009 at 23,0 ft. At 46 lbs and 45 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.
The power gap is worth calling out. Rated to 375 hp, the Mariah DX253 Deck Boat 2007 has a 55-hp advantage over the Mariah G23 2009's 320-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Mariah G23 2009 carries 57 gallons versus 45 gallons in the Mariah DX253 Deck Boat 2007. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 12 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Bottom line: Performance buyers should lean toward the Mariah DX253 Deck Boat 2007 and its 375-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Mariah G23 2009 with its 320-hp rating is the more economical daily driver.