Both the EdgeWater 170CC 2009 and the EdgeWater 205CX 2009 are deep-V designs, both built in fibreglass, so 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 205CX 2009 measures 20,0 feet overall (2009), giving it roughly 4,0 additional feet of deck space compared to the EdgeWater 170CC 2009 at 16,0 feet (2009). Weight tells a clearer story for trailering families: the EdgeWater 205CX 2009 tips the scales at 2 800 lbs - 1 100 lbs less than the EdgeWater 170CC 2009 at 1 700 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 205CX 2009 has a 110-hp advantage over the EdgeWater 170CC 2009's 115-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 205CX 2009 carries 75 gallons versus 32 gallons in the EdgeWater 170CC 2009. 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 205CX 2009 is rated for 9 passengers, while the EdgeWater 170CC 2009 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the EdgeWater 205CX 2009 could be the deciding factor.
Bottom line: Choose the EdgeWater 205CX 2009 if your priority is putting more people on the water - it handles 9 passengers and at 20,0 ft it has the deck room to back that rating up comfortably. The EdgeWater 170CC 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.