The Malibu Boats Response TXi 2021 vs Malibu Wakesetter 21 XTi 2006 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 Response TXi 2021 at 20,6 ft versus Malibu Wakesetter 21 XTi 2006 at 21,0 ft. Weight tells a clearer story for trailering families: the Malibu Boats Response TXi 2021 tips the scales at 3 100 lbs — 3 066 lbs more than the Malibu Wakesetter 21 XTi 2006 at 34 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 400 hp, the Malibu Wakesetter 21 XTi 2006 has a 40-hp advantage over the Malibu Boats Response TXi 2021's 360-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 Wakesetter 21 XTi 2006 carries 46 gallons versus 4 gallons in the Malibu Boats Response TXi 2021. 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 Wakesetter 21 XTi 2006 is rated for 12 passengers, while the Malibu Boats Response TXi 2021 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Malibu Wakesetter 21 XTi 2006 could be the deciding factor.
Bottom line: Choose the Malibu Wakesetter 21 XTi 2006 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 Response TXi 2021 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.