Ah yes, the Leo 1. We in Canada had those for a long, long time. Good tanks, too. Superb for the whole idea of a fast-moving tank battle; not particularly heavily armored by damn heavily armed, the Germans would have been experts and shoot n' scoot if the Soviets invaded. Now we got the Leo 2, and it's both heavily armored, heavily armed, and fast, too. Talk about uncompromising. Only the Jerries could manage it.
I always felt that with the Leopard, taking pot shots at the oncoming hoard! But then my favourite of the era was always the Chieftain - chunky, accurate thing that may have been let down by it's reliability.