Both the Lund 2010 Pro Guide 2007 and the Lund Classic 1660 Sport 2006 are modified-V designs, both built in aluminium, 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?
Size is the most obvious dividing line here. The Lund 2010 Pro Guide 2007 measures 20,0 feet overall (2007), giving it roughly 4,0 additional feet of deck space compared to the Lund Classic 1660 Sport 2006 at 16,0 feet (2006). Weight tells a clearer story for trailering families: the Lund 2010 Pro Guide 2007 tips the scales at 1 440 lbs - 540 lbs more than the Lund Classic 1660 Sport 2006 at 900 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 115 hp, the Lund 2010 Pro Guide 2007 has a 40-hp advantage over the Lund Classic 1660 Sport 2006's 75-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Lund 2010 Pro Guide 2007 carries 40 gallons versus 19 gallons in the Lund Classic 1660 Sport 2006. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
Both boats are rated for 6 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: The Lund 2010 Pro Guide 2007 at 20,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Lund Classic 1660 Sport 2006 at 16,0 ft wins on trailering ease, likely lower purchase price, and simpler docking - a solid choice for a buyer who wants more boat for less money.