The Zodiac IV 2009 vs Zodiac Open 5.5 PVC 115hp T-Top On Order 2021 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
The power gap is worth calling out. Rated to 350 hp, the Zodiac IV 2009 has a 235-hp advantage over the Zodiac Open 5.5 PVC 115hp T-Top On Order 2021'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 Zodiac IV 2009 is rated for 15 passengers, while the Zodiac Open 5.5 PVC 115hp T-Top On Order 2021 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Zodiac IV 2009 could be the deciding factor.
Bottom line: Choose the Zodiac IV 2009 if your priority is putting more people on the water — it handles 15 passengers and at 27,9 ft it has the deck room to back that rating up comfortably. The Zodiac Open 5.5 PVC 115hp T-Top On Order 2021 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.