Both the Mariah FS20 2010 and the Mariah R20 2012 are modified-V designs, the first built in fibreglass and the second in aluminium, 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?

On paper these two are close siblings in the size department - Mariah FS20 2010 at 20,0 ft versus Mariah R20 2012 at 21,3 ft. At 3 550 lbs and 3 650 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 260 hp, the Mariah FS20 2010 has a 35-hp advantage over the Mariah R20 2012's 225-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 FS20 2010 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 10 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.