I'd say some of the garish bejewelled things but that being said the internal mechanics are sound. Obviously the older subs etc had inferior bracelets vs today's model but we have to put the age into context. BTW current Air King has been a divisive watch stylistically but the specifications of the bracelet and movement are very good. I don't really think there would be a 'bad' modern Rolex but you could say the same of Omega, Breitling, IWC etc.