The Nitro 640 LX 2004 vs Nitro 911 CDC 2004 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 300 hp, the Nitro 911 CDC 2004 has a 210-hp advantage over the Nitro 640 LX 2004'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 Nitro 911 CDC 2004 carries 57 gallons versus 24 gallons in the Nitro 640 LX 2004. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 4 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 Nitro 911 CDC 2004 and its 300-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Nitro 640 LX 2004 with its 90-hp rating is the more economical daily driver.