I'm sorry, I don't have any other suggestions since I normally grow California Wonder since it is fairly tried and true for me. However, I do find production and size (both of plants and produce) can be much affected by weather. During a hot drought, my bell pepper plants did great with some added water. During a cool summer, plants sat still and produced little.
But I did want to say thank you for posting this thread, because I saw Big Bertha listed in a catalog and had pondered growing it. So I think I will give it a try.
