Both the Mariah R26 2012 and the Mariah SX20 Bow Rider 2008 are modified-V designs, the first built in aluminium and the second 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 Mariah R26 2012 measures 26,4 feet overall (2012), giving it roughly 6,4 additional feet of deck space compared to the Mariah SX20 Bow Rider 2008 at 20,0 feet (2008). Weight tells a clearer story for trailering families: the Mariah R26 2012 tips the scales at 5 000 lbs - 2 100 lbs more than the Mariah SX20 Bow Rider 2008 at 2 900 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.
The power gap is worth calling out. Rated to 425 hp, the Mariah R26 2012 has a 165-hp advantage over the Mariah SX20 Bow Rider 2008's 260-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 R26 2012 carries 75 gallons versus 38 gallons in the Mariah SX20 Bow Rider 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 Mariah SX20 Bow Rider 2008 is rated for 10 passengers, while the Mariah R26 2012 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Mariah SX20 Bow Rider 2008 could be the deciding factor.
Bottom line: Choose the Mariah SX20 Bow Rider 2008 if your priority is putting more people on the water - it handles 10 passengers and at 20,0 ft it has the deck room to back that rating up comfortably. The Mariah R26 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.