My second favortie tank, Deutschland Leopard 2A6. Specifications comparable to M1A1 Abrams. Differences include, using a slightly weaker and less peppy diesel engine but has slightly longer range in return, uses different external threat engagement system for defense against incoming ATM threats, in NATO accuracy test the Leopard 2 scored 2nd most accurate MBT just behind the Abrams (the Leopard hitting 19 out of 20 2.5m wide moving targets at 1.5km distance, the Abrams hitting 20 out of 20 2.5m wide moving targets at 1.5km distance), and the Leopard is $500,000 cheaper than the Abrams.
https://www.youtube.com/watch?v=WrZni_qAorQ 