Both the Landau Harbor Cruise 18 2010 and the Landau Island Breeze Sport Cruise 212 SC 2013 are pontoon 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 - Landau Harbor Cruise 18 2010 at 18,0 ft versus Landau Island Breeze Sport Cruise 212 SC 2013 at 20,0 ft. Weight tells a clearer story for trailering families: the Landau Island Breeze Sport Cruise 212 SC 2013 tips the scales at 1 743 lbs - 282 lbs less than the Landau Harbor Cruise 18 2010 at 1 461 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.
Both boats share a closely matched power ceiling - 75 hp for the Landau Harbor Cruise 18 2010 and 90 hp for the Landau Island Breeze Sport Cruise 212 SC 2013. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the Landau Island Breeze Sport Cruise 212 SC 2013 carries 33 gallons versus 26 gallons in the Landau Harbor Cruise 18 2010. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
For family outings this is probably the sharpest distinction between the two. The Landau Island Breeze Sport Cruise 212 SC 2013 is rated for 8 passengers, while the Landau Harbor Cruise 18 2010 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Landau Island Breeze Sport Cruise 212 SC 2013 could be the deciding factor.
Both are 23-tube and 23-tube pontoon designs respectively. Tube diameter and gauge affect stability and load capacity - more so than most buyers realize when comparing on paper.
Bottom line: Choose the Landau Island Breeze Sport Cruise 212 SC 2013 if your priority is putting more people on the water - it handles 8 passengers and at 20,0 ft it has the deck room to back that rating up comfortably. The Landau Harbor Cruise 18 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.