When two boats share the same hull type — in this case both the Voyager Marine Series 7000 (1670 Open) 2010 and the Voyager Marine Series 8500 - 1685 2008 are flat designs with aluminum construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
On paper these two are close siblings in the size department — Voyager Marine Series 7000 (1670 Open) 2010 at 16,0 ft versus Voyager Marine Series 8500 - 1685 2008 at 16,0 ft. Weight tells a clearer story for trailering families: the Voyager Marine Series 7000 (1670 Open) 2010 tips the scales at 275 lbs — 232 lbs more than the Voyager Marine Series 8500 - 1685 2008 at 43 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 Voyager Marine Series 8500 - 1685 2008 tops out at 40 hp. Engine specs for the Voyager Marine Series 7000 (1670 Open) 2010 aren't listed — confirm with a dealer before selecting an outboard.
For family outings this is probably the sharpest distinction between the two. The Voyager Marine Series 8500 - 1685 2008 is rated for 3 passengers, while the Voyager Marine Series 7000 (1670 Open) 2010 caps at 2. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Voyager Marine Series 8500 - 1685 2008 could be the deciding factor.
Bottom line: Choose the Voyager Marine Series 8500 - 1685 2008 if your priority is putting more people on the water — it handles 3 passengers and at 16,0 ft it has the deck room to back that rating up comfortably. The Voyager Marine Series 7000 (1670 Open) 2010 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 2 that costs less to run day-to-day.