Unfortunately, I don't think you'll find a used 292 Formula for 40-50K unless it has been sunk. Quality is great on the Formula, can say about the Donzi. I have a Formula 312 and had to add an extension to the bed to sleep on it comfortably. A buddy that has a 292 sleeps in the floor and his wife sleeps in the berth because the space is limited up there. His has twin 6.2's (320 hp) and runs 68-70GPS.