When two boats share the same hull type — in this case both the EdgeWater 188CC 2010 and the EdgeWater 205EX 2010 are deep vee designs with fiberglass 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?
Size is the most obvious dividing line here. The EdgeWater 188CC 2010 measures 18,0 feet overall (2010), giving it roughly 16,0 additional feet of deck space compared to the EdgeWater 205EX 2010 at 2,0 feet (2010). Weight tells a clearer story for trailering families: the EdgeWater 188CC 2010 tips the scales at 205 lbs — 177 lbs more than the EdgeWater 205EX 2010 at 28 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.
The power gap is worth calling out. Rated to 225 hp, the EdgeWater 205EX 2010 has a 75-hp advantage over the EdgeWater 188CC 2010'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 EdgeWater 188CC 2010 carries 54 gallons versus 9 gallons in the EdgeWater 205EX 2010. 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 EdgeWater 188CC 2010 is rated for 7 passengers, while the EdgeWater 205EX 2010 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the EdgeWater 188CC 2010 could be the deciding factor.
At this size, power-to-weight ratio matters more than outright horsepower. The EdgeWater 205EX 2010 comes in at 0 lbs per hp versus 1 lbs per hp for the EdgeWater 188CC 2010. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.
Bottom line: Choose the EdgeWater 188CC 2010 if your priority is putting more people on the water — it handles 7 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The EdgeWater 205EX 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.