The Triton Boats 1431 SFB 2006 vs Triton Boats SF-21 2005 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.
Size is the most obvious dividing line here. The Triton Boats SF-21 2005 measures 21,0 feet overall (2005), giving it roughly 7,0 additional feet of deck space compared to the Triton Boats 1431 SFB 2006 at 14,0 feet (2006). At 125 lbs and 199 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 245 hp, the Triton Boats SF-21 2005 has a 235-hp advantage over the Triton Boats 1431 SFB 2006's 10-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Triton Boats SF-21 2005 is rated for 7 passengers, while the Triton Boats 1431 SFB 2006 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Triton Boats SF-21 2005 could be the deciding factor.
Bottom line: Choose the Triton Boats SF-21 2005 if your priority is putting more people on the water — it handles 7 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Triton Boats 1431 SFB 2006 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 3 that costs less to run day-to-day.