From mid-1942, the Detroit Arsenal was going to flood Britain, and everywhere else, with tanks. I don't understand the argument about better tanks waiting to be built, when from this point onwards Britain didn't really need to build another tank. Well, it's better than not having any equipment to train on at all. Soviet crews were lucky to have had even a couple of hours in a tank prior to allocation during the Battle Of Moscow, according to some articles I've read. And again, was it as unreliable as its reputation suggests? Some solid availability data would be useful, I would suggest.