The Malibu Boats Wakesetter 20 VTX 2020 vs Malibu Sunsetter 21 XTi 2005 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.
On paper these two are close siblings in the size department — Malibu Boats Wakesetter 20 VTX 2020 at 20,0 ft versus Malibu Sunsetter 21 XTi 2005 at 21,0 ft. Weight tells a clearer story for trailering families: the Malibu Boats Wakesetter 20 VTX 2020 tips the scales at 3 950 lbs — 3 917 lbs more than the Malibu Sunsetter 21 XTi 2005 at 33 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 430 hp, the Malibu Boats Wakesetter 20 VTX 2020 has a 30-hp advantage over the Malibu Sunsetter 21 XTi 2005's 400-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Malibu Sunsetter 21 XTi 2005 carries 46 gallons versus 39 gallons in the Malibu Boats Wakesetter 20 VTX 2020. 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 Malibu Sunsetter 21 XTi 2005 is rated for 12 passengers, while the Malibu Boats Wakesetter 20 VTX 2020 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Malibu Sunsetter 21 XTi 2005 could be the deciding factor.
Bottom line: Choose the Malibu Sunsetter 21 XTi 2005 if your priority is putting more people on the water — it handles 12 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Malibu Boats Wakesetter 20 VTX 2020 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.