Both the Starcraft Marine Limited 2000 I/O 2012 and the Starcraft Marine Limited 2321 Cuddy I/O 2012 are modified-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?
On paper these two are close siblings in the size department - Starcraft Marine Limited 2000 I/O 2012 at 20,3 ft versus Starcraft Marine Limited 2321 Cuddy I/O 2012 at 21,2 ft. At 2 325 lbs and 2 300 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 320 hp, the Starcraft Marine Limited 2321 Cuddy I/O 2012 has a 60-hp advantage over the Starcraft Marine Limited 2000 I/O 2012's 260-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Starcraft Marine Limited 2000 I/O 2012 carries 51 gallons versus 45 gallons in the Starcraft Marine Limited 2321 Cuddy I/O 2012. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 12 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.
Bottom line: Performance buyers should lean toward the Starcraft Marine Limited 2321 Cuddy I/O 2012 and its 320-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Starcraft Marine Limited 2000 I/O 2012 with its 260-hp rating is the more economical daily driver.