The Tiara Yachts 3600 Open 2012 is a deep-V design and the Tiara Yachts 3900 Open 2010 is a modified-V design, so you're likely deciding between two noticeably different on-water experiences. Hull type shapes everything from ride quality and fuel burn to dock handling and resale trajectory.

On paper these two are close siblings in the size department - Tiara Yachts 3600 Open 2012 at 38,9 ft versus Tiara Yachts 3900 Open 2010 at 41,9 ft. Weight tells a clearer story for trailering families: the Tiara Yachts 3900 Open 2010 tips the scales at 24 500 lbs - 5 400 lbs less than the Tiara Yachts 3600 Open 2012 at 19 100 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 Tiara Yachts 3600 Open 2012 carries a rated maximum of 380 hp. Engine data for the Tiara Yachts 3900 Open 2010 wasn't available in our records - check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Tiara Yachts 3900 Open 2010 carries 535 gallons versus 350 gallons in the Tiara Yachts 3600 Open 2012. 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 3900 Open 2010 is rated for 12 passengers, while the Tiara Yachts 3600 Open 2012 caps at 11. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Tiara Yachts 3900 Open 2010 could be the deciding factor.