The Nor-Tech 5000V 2012 is a deep-V design and the Nor-Tech 5200 Roadster 2013 is a catamaran design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
On paper these two are close siblings in the size department - Nor-Tech 5000V 2012 at 51,8 ft versus Nor-Tech 5200 Roadster 2013 at 49,0 ft. Weight tells a clearer story for trailering families: the Nor-Tech 5000V 2012 tips the scales at 15 500 lbs - 2 000 lbs more than the Nor-Tech 5200 Roadster 2013 at 13 500 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.
For family outings this is probably the sharpest distinction between the two. The Nor-Tech 5000V 2012 is rated for 15 passengers, while the Nor-Tech 5200 Roadster 2013 caps at 14. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Nor-Tech 5000V 2012 could be the deciding factor.
Bottom line: Choose the Nor-Tech 5000V 2012 if your priority is putting more people on the water - it handles 15 passengers and at 51,8 ft it has the deck room to back that rating up comfortably. The Nor-Tech 5200 Roadster 2013 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 14 that costs less to run day-to-day.