When two boats share the same hull type — in this case both the McKee Craft Bay Classic 185 2008 and the McKee Craft Marathon 184 CC 2008 are modified vee designs with composite construction — 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?
The power gap is worth calling out. Rated to 175 hp, the McKee Craft Marathon 184 CC 2008 has a 25-hp advantage over the McKee Craft Bay Classic 185 2008's 150-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 2008 carries 65 gallons versus 35 gallons in the McKee Craft Bay Classic 185 2008. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 8 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.
Bottom line: Performance buyers should lean toward the McKee Craft Marathon 184 CC 2008 and its 175-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the McKee Craft Bay Classic 185 2008 with its 150-hp rating is the more economical daily driver.