The Bennington 2275 RL I/O 2004 vs Bennington 2875 RLTDIO 2007 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.
The power gap is worth calling out. Rated to 320 hp, the Bennington 2875 RLTDIO 2007 has a 318-hp advantage over the Bennington 2275 RL I/O 2004's 2-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Bennington 2875 RLTDIO 2007 carries 62 gallons versus 52 gallons in the Bennington 2275 RL I/O 2004. 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 Bennington 2875 RLTDIO 2007 is rated for 15 passengers, while the Bennington 2275 RL I/O 2004 caps at 13. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Bennington 2875 RLTDIO 2007 could be the deciding factor.
Both are inflatable designs, which means they pack down for compact storage, can be carried in a bag, and are dramatically lighter than equivalent rigid hulls. The trade-off is setup time and the need to monitor tube pressure regularly.
Bottom line: Choose the Bennington 2875 RLTDIO 2007 if your priority is putting more people on the water - it handles 15 passengers and at 28,0 ft it has the deck room to back that rating up comfortably. The Bennington 2275 RL I/O 2004 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 13 that costs less to run day-to-day.