Favorite fighter.

WC3: Arrow, then Excalibur when available
WC4: Hellcat ::barf:: when you're with confed (for lack of a better option).. Banshee with BW, Dragon and Bearcat when available.

I thought I was just a light fighter fan, but I think it's the way WC is set up- the slide function is so useful and speed is needed to evade missiles on the difficult settings. I actually prefer heavy fighters in other games (like the Wolverine from Starlancer). The Thunderbolt and Longbow are very capable fighters in WC3, especially for killing large cap ships thanks to your torps. But if you're not lazy, I think light fighters with slide are your best bet for a successful mission.