Quoted from LaughingOtter:OK. Hot Wheels? Not Matchbox?
When I was a kid it was always Hot Wheels above Matchbox. Back then durability was a pretty big deal, because let's face it, I was 3-7 playing with hot wheels, probably pretty hard on toys.
When it comes to being smashed with a metal ball a la TF, you probably want to go with the more durable.