The Achilles RS-110 2006 vs Achilles SPD-104 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 - Achilles RS-110 2006 at 11,0 ft versus Achilles SPD-104 2006 at 10,0 ft. At 72 lbs and 96 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 Achilles SPD-104 2006 tops out at 10 hp. Engine specs for the Achilles RS-110 2006 aren't listed - confirm with a dealer before selecting an outboard.
For family outings this is probably the sharpest distinction between the two. The Achilles SPD-104 2006 is rated for 4 passengers, while the Achilles RS-110 2006 caps at 3. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Achilles SPD-104 2006 could be the deciding factor.
Bottom line: Choose the Achilles SPD-104 2006 if your priority is putting more people on the water - it handles 4 passengers and at 10,0 ft it has the deck room to back that rating up comfortably. The Achilles RS-110 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.