I really don't have one favorite fighter plane but the F4F Wildcat went toe to toe with the Mitsubishi A6M and some of the best pilots in the world. The Wildcat was by no means the best but it was what we had. The Wildcat has been accused of being inferior to the Zero but that is just not true. The Wildcat was made tough, but not too pretty. Like me.
Funny story about the Wildcat. When it first came out the navy pilots were ecstatic. This little plane was like hot rod. Then the Navy said "We're going to put a 200 chunk of armor plating behind the pilots seat." The pilots protested saying it was like having an extra pilot. Then the Navy said "We're going to add a resealing fuel tank." and the navy pilots protested again. "You are adding more weight and cutting down on our range!" Then the Navy said "We are going to add folding wings so we can fit a few more on a carrier" and the pilots lamented "MORE WEIGHT!! Thanks for nothing!" Then lastly the Navy said "4 50 caliber machine guns is not enough, we are going to add one on each wing, giving you 6 .50s but we are going to cut the number of rounds per gun from 350rds to 247 rounds." The pilots protested "Four 50's are plenty for shooting down Jap planes, We don't want the extra weight and less trigger time." So by the time the Navy got through with the F4F it was 30mph slower and it's climb rate was halved.