Object 907
Let’s all take a moment to appreciate that this beast is extremely rare and difficult to acquire, because the Object 907 is one of the most powerful tanks in the game. This Tier 10 Clan Wars Reward Tank belongs to the USSR and boasts an outstanding combination of DPM, armor, and mobility.
Despite being a Medium Tank, the Object 907's effective armor is more comparable to a Heavy tank. The hull is diamond-shaped, providing exceptional angling down the sides. This translates to auto-ricochet angles even when angling the Tank at 45 degrees, with nominal armor values that largely prevent Overmatch. Combine this with a very capable turret, which has cupolas thicker than the turret face armor, and you've got yourself a tough nut to crack.
The crazy part comes in when you consider the mobility of the vehicle, considering the armor it holds. The top speed and power-to-weight are decent enough, but the traverse speed of 56 degrees per second is absolutely insane, and the terrain resistance values are so slow you'd think you're driving a hovercraft.
Finally, the firepower is traditionally outstanding, as it is a Russian Medium afterall. High penetration, and excellent DPM and gun handling round the Object 907 off as one of the greatest Tier 10 Medium Tanks in the game.