Matching a flat Weld-Craft 2070 2010 against a deep vee Weldcraft Marine 173 2009 means you're likely deciding between two genuinely different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.
The power gap is worth calling out. Rated to 150 hp, the Weld-Craft 2070 2010 has a 35-hp advantage over the Weldcraft Marine 173 2009's 115-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Weldcraft Marine 173 2009 carries 42 gallons versus 19 gallons in the Weld-Craft 2070 2010. 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 Weld-Craft 2070 2010 is rated for 6 passengers, while the Weldcraft Marine 173 2009 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Weld-Craft 2070 2010 could be the deciding factor.
Bottom line: Choose the Weld-Craft 2070 2010 if your priority is putting more people on the water — it handles 6 passengers and at 2,0 ft it has the deck room to back that rating up comfortably. The Weldcraft Marine 173 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.