Matching a modified vee Crownline 21 SS 2010 against a deep vee Crownline 300 LS 2009 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

Size is the most obvious dividing line here. The Crownline 21 SS 2010 measures 20,8 feet overall (2010), giving it roughly 17,8 additional feet of deck space compared to the Crownline 300 LS 2009 at 3,0 feet (2009). At 37 lbs and 89 lbs respectively, both sit in a similar weight class — either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.

The power gap is worth calling out. Rated to 600 hp, the Crownline 300 LS 2009 has a 280-hp advantage over the Crownline 21 SS 2010's 320-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Crownline 300 LS 2009 carries 84 gallons versus 41 gallons in the Crownline 21 SS 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 Crownline 300 LS 2009 is rated for 9 passengers, while the Crownline 21 SS 2010 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Crownline 300 LS 2009 could be the deciding factor.