I stand corrected but in fairness I did say there was two cams.kind of implies 16 or more valves.

Why do people keep asking this question? It's hardly a deal breaker either way. On balance I prefer belts, but I wouldn't turn down a car with a chain engine.

Then the handbook would say that. I'm assuming these questions are from people in the market looking at various cars and the belt/chain question is a deciding factor. Weighing up the possible high cost of replacing a rattling chain with the almost certain moderate cost of a replacement belt, I'd still err on the side of a belt. But I wouldn't turn down a car because it had a chain engine.