The Crest Crest III Classic Model 30 2004 vs Crest II 18 2007 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.
Size is the most obvious dividing line here. The Crest Crest III Classic Model 30 2004 measures 30,0 feet overall (2004), giving it roughly 12,0 additional feet of deck space compared to the Crest II 18 2007 at 18,0 feet (2007). Weight tells a clearer story for trailering families: the Crest Crest III Classic Model 30 2004 tips the scales at 2 750 lbs - 600 lbs more than the Crest II 18 2007 at 2 150 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 140 hp, the Crest Crest III Classic Model 30 2004 has a 65-hp advantage over the Crest II 18 2007's 75-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Crest Crest III Classic Model 30 2004 is rated for 21 passengers, while the Crest II 18 2007 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Crest Crest III Classic Model 30 2004 could be the deciding factor.
Bottom line: Choose the Crest Crest III Classic Model 30 2004 if your priority is putting more people on the water - it handles 21 passengers and at 30,0 ft it has the deck room to back that rating up comfortably. The Crest II 18 2007 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 10 that costs less to run day-to-day.