Steel monsters. Best tanks of World War II

During World War II tanks played a crucial role in the battles and operations. It is very hard to choose, what tank is the best, so the places in this top list are based on time periods of tanks building and others reasons like an active participation in conflicts and its value in a war.
Танк Panzerkampfwagen III (PzKpfw III)

Танк Panzerkampfwagen IV (PzKpfw IV)

KV-1

T-34

Panzerkampfwagen VI «Tiger I» Ausf E, «Тигр»