The Sundance 171 Bay 2006 vs Sundance DX20 2012 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.
On paper these two are close siblings in the size department — Sundance 171 Bay 2006 at 17,0 ft versus Sundance DX20 2012 at 19,8 ft. Weight tells a clearer story for trailering families: the Sundance DX20 2012 tips the scales at 1 575 lbs — 1 426 lbs less than the Sundance 171 Bay 2006 at 149 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.
The power gap is worth calling out. Rated to 130 hp, the Sundance DX20 2012 has a 40-hp advantage over the Sundance 171 Bay 2006's 90-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 34 gal and 33 gal — so range won't be a tiebreaker here.
For family outings this is probably the sharpest distinction between the two. The Sundance DX20 2012 is rated for 8 passengers, while the Sundance 171 Bay 2006 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sundance DX20 2012 could be the deciding factor.
Bottom line: Choose the Sundance DX20 2012 if your priority is putting more people on the water — it handles 8 passengers and at 19,8 ft it has the deck room to back that rating up comfortably. The Sundance 171 Bay 2006 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.