When two boats share the same hull type — in this case both the Mariah R20 2012 and the Mariah SC19 Cuddy Cabin 2008 are modified vee designs with aluminum 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 R20 2012 at 21,3 ft versus Mariah SC19 Cuddy Cabin 2008 at 19,0 ft. Weight tells a clearer story for trailering families: the Mariah R20 2012 tips the scales at 365 lbs — 336 lbs more than the Mariah SC19 Cuddy Cabin 2008 at 29 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 — 225 hp for the Mariah R20 2012 and 220 hp for the Mariah SC19 Cuddy Cabin 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. Fuel capacity breaks the other way: the Mariah SC19 Cuddy Cabin 2008 carries 38 gallons versus 22 gallons in the Mariah R20 2012. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 1 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: The Mariah R20 2012 at 21,3 ft is the right call if deck space, comfort, and entertaining are top of your list. The Mariah SC19 Cuddy Cabin 2008 at 19,0 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.