>>>From a prog on the world's best tanks, over the years, I believe the American M1 Abrams comes out on top, with the British Challenger pretty close. Of WW II, of course: The Tiger and the Stalin.
>>
>>Challenger didn't make this list, but the Centurion did. Also the M1 Abrahams came in 2nd, the German Leopard 2 came out on top.
>>http://www.discoverychannel.co.uk/greatest_ever/tanks/index.shtml
>
>That list is of "...most interesting and famous..." though, not the best.

Or as they say "The Greatest".