When two boats share the same hull type — in this case both the Centurion Avalanche C4 2012 and the Centurion Enzo SV230 2009 are deep vee designs with fiberglass 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?
On paper these two are close siblings in the size department — Centurion Avalanche C4 2012 at 22,0 ft versus Centurion Enzo SV230 2009 at 23,0 ft. At 4 lbs and 44 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.
For family outings this is probably the sharpest distinction between the two. The Centurion Enzo SV230 2009 is rated for 14 passengers, while the Centurion Avalanche C4 2012 caps at 12. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Centurion Enzo SV230 2009 could be the deciding factor.
Bottom line: Choose the Centurion Enzo SV230 2009 if your priority is putting more people on the water — it handles 14 passengers and at 23,0 ft it has the deck room to back that rating up comfortably. The Centurion Avalanche C4 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 12 that costs less to run day-to-day.