Both the ThunderJet Alexis 2011 and the ThunderJet Luxor 2009 are modified-V designs, both built in aluminium, so 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?
On paper these two are close siblings in the size department - ThunderJet Alexis 2011 at 21,0 ft versus ThunderJet Luxor 2009 at 19,0 ft. At 2 600 lbs and 2 600 lbs respectively, both sit in a similar weight class - either should pair comfortably with most mid-size SUVs and half-ton trucks, though always confirm your specific tow rating with the motor added.
The power gap is worth calling out. Rated to 425 hp, the ThunderJet Alexis 2011 has a 175-hp advantage over the ThunderJet Luxor 2009's 250-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 50 gal - so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The ThunderJet Alexis 2011 is rated for 6 passengers, while the ThunderJet Luxor 2009 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the ThunderJet Alexis 2011 could be the deciding factor.
Bottom line: Choose the ThunderJet Alexis 2011 if your priority is putting more people on the water - it handles 6 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The ThunderJet Luxor 2009 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.