The McKee Craft Marathon 172 CC 2008 vs McKee Craft Marathon 184 CC 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 115 hp, the McKee Craft Marathon 172 CC 2008 has a 25-hp advantage over the McKee Craft Marathon 184 CC 2007's 90-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the McKee Craft Marathon 184 CC 2007 carries 65 gallons versus 36 gallons in the McKee Craft Marathon 172 CC 2008. 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 McKee Craft Marathon 184 CC 2007 is rated for 8 passengers, while the McKee Craft Marathon 172 CC 2008 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the McKee Craft Marathon 184 CC 2007 could be the deciding factor.
Bottom line: Choose the McKee Craft Marathon 184 CC 2007 if your priority is putting more people on the water — it handles 8 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The McKee Craft Marathon 172 CC 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.