Both the Sea Ray 21 Jet 2013 and the Sea Ray 350 Sundancer 2013 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?

The power gap is worth calling out. Rated to 300 hp, the Sea Ray 350 Sundancer 2013 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 350 Sundancer 2013 carries 225 gallons versus 45 gallons in the Sea Ray 21 Jet 2013. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 10 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.