When two boats share the same hull type — in this case both the EdgeWater 188CX 2012 and the EdgeWater 205CC 2009 are deep 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?

Size is the most obvious dividing line here. The EdgeWater 188CX 2012 measures 18,7 feet overall (2012), giving it roughly 16,7 additional feet of deck space compared to the EdgeWater 205CC 2009 at 2,0 feet (2009). Weight tells a clearer story for trailering families: the EdgeWater 188CX 2012 tips the scales at 215 lbs — 190 lbs more than the EdgeWater 205CC 2009 at 25 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 205CC 2009 has a 75-hp advantage over the EdgeWater 188CX 2012'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 205CC 2009 carries 9 gallons versus 4 gallons in the EdgeWater 188CX 2012. 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 205CC 2009 is rated for 9 passengers, while the EdgeWater 188CX 2012 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the EdgeWater 205CC 2009 could be the deciding factor.