When two boats share the same hull type — in this case both the Crest Savannah LST 20 2008 and the Crest Upper Sundeck 27 2008 are pontoon designs with aluminum construction — 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 Crest Upper Sundeck 27 2008 measures 27,0 feet overall (2008), giving it roughly 25,0 additional feet of deck space compared to the Crest Savannah LST 20 2008 at 2,0 feet (2008). Weight tells a clearer story for trailering families: the Crest Upper Sundeck 27 2008 tips the scales at 3 988 lbs — 1 163 lbs less than the Crest Savannah LST 20 2008 at 2 825 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 150 hp, the Crest Upper Sundeck 27 2008 has a 35-hp advantage over the Crest Savannah LST 20 2008's 115-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 Crest Upper Sundeck 27 2008 is rated for 15 passengers, while the Crest Savannah LST 20 2008 caps at 13. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Crest Upper Sundeck 27 2008 could be the deciding factor.
Bottom line: Choose the Crest Upper Sundeck 27 2008 if your priority is putting more people on the water — it handles 15 passengers and at 27,0 ft it has the deck room to back that rating up comfortably. The Crest Savannah LST 20 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 13 that costs less to run day-to-day.