Both the Checkmate Convincor 270 BR 2010 and the Checkmate ZT 275 2011 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?
On paper these two are close siblings in the size department - Checkmate Convincor 270 BR 2010 at 27,0 ft versus Checkmate ZT 275 2011 at 27,3 ft. At 4 000 lbs and 4 100 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 525 hp, the Checkmate ZT 275 2011 has a 100-hp advantage over the Checkmate Convincor 270 BR 2010's 425-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Checkmate ZT 275 2011 carries 80 gallons versus 75 gallons in the Checkmate Convincor 270 BR 2010. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Bottom line: Performance buyers should lean toward the Checkmate ZT 275 2011 and its 525-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Checkmate Convincor 270 BR 2010 with its 425-hp rating is the more economical daily driver.