When two boats share the same hull type — in this case both the Malibu Response LX 2005 and the Malibu VTX 2010 are modified vee designs with composite 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?
The power gap is worth calling out. Rated to 505 hp, the Malibu VTX 2010 has a 105-hp advantage over the Malibu Response LX 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 VTX 2010 carries 46 gallons versus 35 gallons in the Malibu Response LX 2005. 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 Response LX 2005 is rated for 8 passengers, while the Malibu VTX 2010 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Malibu Response LX 2005 could be the deciding factor.
Bottom line: Choose the Malibu Response LX 2005 if your priority is putting more people on the water — it handles 8 passengers and at 2,0 ft it has the deck room to back that rating up comfortably. The Malibu VTX 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.