Aerobatics -Which would you choose?
I have personal experience of flying/instructing aerobatics in both types. I would prefer the Bulldog. However if you are planning to invest a reasonable amount of money in a proper aerobatics course I would suggest a trip in both types to see which one YOU enjoy most. Despite it's shortcomings compared to some other types the Firefly is lovely compared to a C150. Weight and C of G can also be an issue when aerobatting a firefly so have a look at that too.