When two boats share the same hull type — in this case both the Tiara Yachts 4200 Open 2008 and the Tiara Yachts 4700 Sovran 2009 are modified 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?

Size is the most obvious dividing line here. The Tiara Yachts 4700 Sovran 2009 measures 47,0 feet overall (2009), giving it roughly 5,0 additional feet of deck space compared to the Tiara Yachts 4200 Open 2008 at 42,0 feet (2008). Weight tells a clearer story for trailering families: the Tiara Yachts 4700 Sovran 2009 tips the scales at 3 315 lbs — 3 029 lbs less than the Tiara Yachts 4200 Open 2008 at 286 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.

Both boats share a closely matched power ceiling — 715 hp for the Tiara Yachts 4200 Open 2008 and 715 hp for the Tiara Yachts 4700 Sovran 2009. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the Tiara Yachts 4700 Sovran 2009 carries 526 gallons versus 52 gallons in the Tiara Yachts 4200 Open 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 Tiara Yachts 4700 Sovran 2009 is rated for 14 passengers, while the Tiara Yachts 4200 Open 2008 caps at 13. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Tiara Yachts 4700 Sovran 2009 could be the deciding factor.