Both the Triton Boats 1756 SC 2009 and the Triton Boats 2070 SC 2012 are modified-V designs, both built 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 - Triton Boats 1756 SC 2009 at 17,0 ft versus Triton Boats 2070 SC 2012 at 20,0 ft. Weight tells a clearer story for trailering families: the Triton Boats 2070 SC 2012 tips the scales at 1 125 lbs - 395 lbs less than the Triton Boats 1756 SC 2009 at 730 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 - 75 hp for the Triton Boats 1756 SC 2009 and 75 hp for the Triton Boats 2070 SC 2012. 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.
For family outings this is probably the sharpest distinction between the two. The Triton Boats 2070 SC 2012 is rated for 6 passengers, while the Triton Boats 1756 SC 2009 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Triton Boats 2070 SC 2012 could be the deciding factor.
Bottom line: Choose the Triton Boats 2070 SC 2012 if your priority is putting more people on the water - it handles 6 passengers and at 20,0 ft it has the deck room to back that rating up comfortably. The Triton Boats 1756 SC 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.