The Triton Boats 1436 SFB 2010 is a flat-bottom design and the Triton Boats Ambush 18 2010 is a modified-V design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
The power gap is worth calling out. Rated to 75 hp, the Triton Boats Ambush 18 2010 has a 55-hp advantage over the Triton Boats 1436 SFB 2010's 20-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 Ambush 18 2010 is rated for 4 passengers, while the Triton Boats 1436 SFB 2010 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 Ambush 18 2010 could be the deciding factor.
Bottom line: Choose the Triton Boats Ambush 18 2010 if your priority is putting more people on the water - it handles 4 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Triton Boats 1436 SFB 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 3 that costs less to run day-to-day.