Matching a deep vee Sea Ray 21 Jet 2013 against a modified vee Sea Ray 300 Select EX 2010 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 Sea Ray 300 Select EX 2010 measures 29,5 feet overall (2010), giving it roughly 8,0 additional feet of deck space compared to the Sea Ray 21 Jet 2013 at 21,5 feet (2013). Weight tells a clearer story for trailering families: the Sea Ray 21 Jet 2013 tips the scales at 2 883 lbs — 2 806 lbs more than the Sea Ray 300 Select EX 2010 at 77 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 300 hp, the Sea Ray 300 Select EX 2010 has a 180-hp advantage over the Sea Ray 21 Jet 2013's 120-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Sea Ray 21 Jet 2013 carries 45 gallons versus 13 gallons in the Sea Ray 300 Select EX 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 Sea Ray 21 Jet 2013 is rated for 10 passengers, while the Sea Ray 300 Select EX 2010 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sea Ray 21 Jet 2013 could be the deciding factor.