Both the Triton Boats 1657 SS 2008 and the Triton Boats 21HP SC 2010 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?

The power gap is worth calling out. Rated to 200 hp, the Triton Boats 21HP SC 2010 has a 150-hp advantage over the Triton Boats 1657 SS 2008's 50-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Triton Boats 21HP SC 2010 carries 54 gallons versus 12 gallons in the Triton Boats 1657 SS 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 Triton Boats 21HP SC 2010 is rated for 675 passengers, while the Triton Boats 1657 SS 2008 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Triton Boats 21HP SC 2010 could be the deciding factor.