Well, let's see!
My mom really likes Millennium Force and Twisted/Mystic Timbers (she really liked both), my dad loves Gatekeeper, Beast, and Steel Vengeance, and my sister loves Top Thrill Dragster.
As for friends, a few of them have ridden Fury 325, and both who have ridden it rank it as their favorite. Most others really like the 3 major B&Ms at Cedar Point, the 3 major Intamins at Cedar Point, or Steel Vengeance. Most of my IRL friends live in Northwest Ohio, so that's reasonable.