When two boats share the same hull type — in this case both the Sea Ray 450 Sedan Bridge 2013 and the Sea Ray 540 Sundancer 2010 are semi displacement designs with fiberglass construction — 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?

Size is the most obvious dividing line here. The Sea Ray 540 Sundancer 2010 measures 54,8 feet overall (2010), giving it roughly 9,2 additional feet of deck space compared to the Sea Ray 450 Sedan Bridge 2013 at 45,6 feet (2013). Weight tells a clearer story for trailering families: the Sea Ray 450 Sedan Bridge 2013 tips the scales at 36 602 lbs — 36 597 lbs more than the Sea Ray 540 Sundancer 2010 at 5 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 574 hp, the Sea Ray 540 Sundancer 2010 has a 94-hp advantage over the Sea Ray 450 Sedan Bridge 2013's 480-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 450 Sedan Bridge 2013 carries 375 gallons versus 6 gallons in the Sea Ray 540 Sundancer 2010. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

The Sea Ray 450 Sedan Bridge 2013 is rated for up to 13 people. Passenger data for the Sea Ray 540 Sundancer 2010 wasn't available.