The Falcon was the best of the StarWars toys, by far far away, IMO. There was a DeathStar set that combined all of the DeathStar 'movie' scenes into one fold out toy set. Had they taken that idea to several sets that pieced together to form the entire DeathStar, that could have beaten the Falcon. But, the MillenniumFalcon, carried the best fun/dollars/hours ratio.
The LandSpeeder was probably one of the most well made toys ever built. Nearly as indestructible as Tonka. The AT-AT was about the opposite. The pieces didn't quite fit right and it fell over so often most had a cracked or broken shell piece by NewYear's Day.