the hurricane MK1 is a beast it has 8 machine guns on the front. basically takes out most fighter style planes with 1 hit. i have it fully upgraded.
in fact i have 3 unlocked planes fully upgraded, the research for new planes is killing me, it takes so long.
going to unlock spitfire, the next hurricane (oh lord it's going to be epic if it's better than the mk1), then the 3rd bomber.
the torpedo plane is a waste of time, useless at killing anything, i would stay away from that tbh it's really slow and struggles to climb even a few thousand feet.