The Pro-Line 27 Walk 2005 vs Pro-Line 31 Express 2005 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.
The power gap is worth calling out. Rated to 600 hp, the Pro-Line 31 Express 2005 has a 200-hp advantage over the Pro-Line 27 Walk 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 Pro-Line 31 Express 2005 carries 312 gallons versus 165 gallons in the Pro-Line 27 Walk 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 Pro-Line 31 Express 2005 is rated for 9 passengers, while the Pro-Line 27 Walk 2005 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Pro-Line 31 Express 2005 could be the deciding factor.
Bottom line: Choose the Pro-Line 31 Express 2005 if your priority is putting more people on the water — it handles 9 passengers and at 0,0 ft it has the deck room to back that rating up comfortably. The Pro-Line 27 Walk 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.