The Pro-Line 17 Sport 2006 vs Pro-Line 20 Express 2009 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.

Size is the most obvious dividing line here. The Pro-Line 17 Sport 2006 measures 17,0 feet overall (2006), giving it roughly 15,0 additional feet of deck space compared to the Pro-Line 20 Express 2009 at 2,0 feet (2009). Weight tells a clearer story for trailering families: the Pro-Line 20 Express 2009 tips the scales at 275 lbs — 258 lbs less than the Pro-Line 17 Sport 2006 at 17 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 200 hp, the Pro-Line 20 Express 2009 has a 85-hp advantage over the Pro-Line 17 Sport 2006's 115-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 4 gal and 7 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Pro-Line 20 Express 2009 is rated for 6 passengers, while the Pro-Line 17 Sport 2006 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Pro-Line 20 Express 2009 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Pro-Line 17 Sport 2006 comes in at 0 lbs per hp versus 1 lbs per hp for the Pro-Line 20 Express 2009. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.