The Triton Boats 21HP SC 2010 vs Triton Boats DV 186 SC Mag 2006 comparison sits squarely in the category of decisions where specs alone won't tell the whole story: intended use, storage, and long-term ownership costs all factor in.
On paper these two are close siblings in the size department - Triton Boats 21HP SC 2010 at 21,0 ft versus Triton Boats DV 186 SC Mag 2006 at 18,0 ft. Weight tells a clearer story for trailering families: the Triton Boats 21HP SC 2010 tips the scales at 1 840 lbs - 190 lbs more than the Triton Boats DV 186 SC Mag 2006 at 1 650 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 - 200 hp for the Triton Boats 21HP SC 2010 and 200 hp for the Triton Boats DV 186 SC Mag 2006. 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 Triton Boats 21HP SC 2010 carries 54 gallons versus 40 gallons in the Triton Boats DV 186 SC Mag 2006. 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 DV 186 SC Mag 2006 caps at 6. 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.
Bottom line: Choose the Triton Boats 21HP SC 2010 if your priority is putting more people on the water - it handles 675 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Triton Boats DV 186 SC Mag 2006 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.