Both the Avalon 20 ft. GS 2013 and the Avalon 26 ft. Catalina Quad Lounge 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?

Size is the most obvious dividing line here. The Avalon 26 ft. Catalina Quad Lounge 2013 measures 26,0 feet overall (2013), giving it roughly 6,0 additional feet of deck space compared to the Avalon 20 ft. GS 2013 at 20,0 feet (2013). Weight tells a clearer story for trailering families: the Avalon 26 ft. Catalina Quad Lounge 2013 tips the scales at 3 125 lbs - 1 375 lbs less than the Avalon 20 ft. GS 2013 at 1 750 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 300 hp, the Avalon 26 ft. Catalina Quad Lounge 2013 has a 225-hp advantage over the Avalon 20 ft. GS 2013's 75-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load.

For family outings this is probably the sharpest distinction between the two. The Avalon 26 ft. Catalina Quad Lounge 2013 is rated for 17 passengers, while the Avalon 20 ft. GS 2013 caps at 9. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Avalon 26 ft. Catalina Quad Lounge 2013 could be the deciding factor.

Both are 2-tube and 3-tube pontoon designs respectively. Tube diameter and gauge affect stability and load capacity - more so than most buyers realize when comparing on paper.