The Churchill? Are you joking? 87000lbs for a tank that initialy mounted 2 (2!) x 2pdrs? The Russians in the same time frame were mounting a long 75mm gun on a KV-1 weighing the same and they thought it undergunned, and later the JS-2 mounted a long 122mm gun on a frame weighing the same thing. Even with the later 6 pdr and the 75mm gun taken from the Sherman the Churchill in Russian terms was just a pea-shooter!

The Firefly? Yes, it was based on what was a damned good chassis, and adding a superlative gun ought to make a good mix.

The Comet, yes, a good tank too, even if considering I wasn't able to squeeze my 1.63m frame into the front hatches! Another tank for Aethiopians!

__________________