Both the Lund 1600 Explorer Tiller 2007 and the Lund 1825 Rebel XL Sport 2011 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?
On paper these two are close siblings in the size department - Lund 1600 Explorer Tiller 2007 at 16,0 ft versus Lund 1825 Rebel XL Sport 2011 at 18,3 ft. At 960 lbs and 965 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 125 hp, the Lund 1825 Rebel XL Sport 2011 has a 65-hp advantage over the Lund 1600 Explorer Tiller 2007's 60-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads - 19 gal and 19 gal - so range won't be a tiebreaker here.
Both boats are rated for 5 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 1825 Rebel XL Sport 2011 at 18,3 ft is the right call if deck space, comfort, and entertaining are top of your list. The Lund 1600 Explorer Tiller 2007 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.