Churchill 1 is really good actually, it derp gun shoots fast and makes you get a lot of kills (3.7 inch howitzer, gold ammo), but its top gun is awesome to.
If you are grinding for an heavy tank tier 10, you should grind for the
T110E5, because its frontal armour and its gun make him a beast.
If you want a tier 10 TD, grind for the
Object 268, because this td will get
187(!) frontal armour instead of just 120..
Medium tank,
Bat Chat 25t of course, OP gun and 65km/h makes this an awesome tank to drive in.
Enjoy WoT