The Malibu Boats Wakesetter 21 MLX 2021 vs Malibu VLX 2009 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 450 hp, the Malibu Boats Wakesetter 21 MLX 2021 has a 50-hp advantage over the Malibu VLX 2009's 400-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 48 gal and 46 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Malibu VLX 2009 is rated for 11 passengers, while the Malibu Boats Wakesetter 21 MLX 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 VLX 2009 could be the deciding factor.
Bottom line: Choose the Malibu VLX 2009 if your priority is putting more people on the water — it handles 11 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Malibu Boats Wakesetter 21 MLX 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.