The Regal Boats 2860 Window Express 2008 vs Regal Boats 402 Commodore 1997 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 315 hp, the Regal Boats 402 Commodore 1997 has a 92-hp advantage over the Regal Boats 2860 Window Express 2008's 223-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Regal Boats 402 Commodore 1997 carries 330 gallons versus 103 gallons in the Regal Boats 2860 Window Express 2008. 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 Regal Boats 402 Commodore 1997 is rated for 12 passengers, while the Regal Boats 2860 Window Express 2008 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Regal Boats 402 Commodore 1997 could be the deciding factor.
Bottom line: Choose the Regal Boats 402 Commodore 1997 if your priority is putting more people on the water - it handles 12 passengers and at 40,0 ft it has the deck room to back that rating up comfortably. The Regal Boats 2860 Window Express 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.