When two boats share the same hull type — in this case both the Chaparral 260 SSi Sportboat 2005 and the Chaparral Signature 310 2009 are modified vee designs with composite 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?

The power gap is worth calling out. Rated to 425 hp, the Chaparral 260 SSi Sportboat 2005 has a 105-hp advantage over the Chaparral Signature 310 2009'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 Chaparral Signature 310 2009 carries 147 gallons versus 79 gallons in the Chaparral 260 SSi Sportboat 2005. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

The Chaparral 260 SSi Sportboat 2005 is rated for up to 14 people. Passenger data for the Chaparral Signature 310 2009 wasn't available.