When two boats share the same hull type — in this case both the Glastron MX 185 2011 and the Glastron SSV 170 2010 are deep vee designs with fiberglass 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 — Glastron MX 185 2011 at 17,1 ft versus Glastron SSV 170 2010 at 16,9 ft. Weight tells a clearer story for trailering families: the Glastron MX 185 2011 tips the scales at 228 lbs — 216 lbs more than the Glastron SSV 170 2010 at 12 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 220 hp, the Glastron MX 185 2011 has a 105-hp advantage over the Glastron SSV 170 2010'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 — 23 gal and 23 gal — so range won't be a tiebreaker here.

Both boats are rated for 7 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

At this size, power-to-weight ratio matters more than outright horsepower. The Glastron SSV 170 2010 comes in at 0 lbs per hp versus 1 lbs per hp for the Glastron MX 185 2011. 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.