Both the Landau 18 Fish 2008 and the Landau A'lure Fishing 204 2011 are pontoon designs, the first built in fibreglass and the second 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 18 Fish 2008 at 18,0 ft versus Landau A'lure Fishing 204 2011 at 20,0 ft. Weight tells a clearer story for trailering families: the Landau 18 Fish 2008 tips the scales at 2 228 lbs - 634 lbs more than the Landau A'lure Fishing 204 2011 at 1 594 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 18 Fish 2008 and 90 hp for the Landau A'lure Fishing 204 2011. 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.
For family outings this is probably the sharpest distinction between the two. The Landau A'lure Fishing 204 2011 is rated for 8 passengers, while the Landau 18 Fish 2008 caps at 7. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Landau A'lure Fishing 204 2011 could be the deciding factor.
Both are 2-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 A'lure Fishing 204 2011 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 18 Fish 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 7 that costs less to run day-to-day.