One that ends before my hands hurt and my eyes feel sore and I go "Ah, come on, just shoot me, this is crap". Sometimes I just lose or do stupid things (and lose often thus) to make it end faster.
As almost all Fighterfights last forever, I like to fight in situations in which one side is outnumbered, so that things have an end faster.
Important in this one: There should be a valid ingame explanation why it is okay to "gank" the other party, e.g. if pirates attack you directly next to your base, it's logic that you might have more ressources... if a miner is pinned down and you have (per chance) 5 escorts close, throw them all on the 2 enemies (even though they might not see this as fair).
A good fight is also a fight that has some ingame logics. That means that there should be no situations in which "furball" happens and random people fight random people without knowing the reason.
A good fight makes me hold my breath when I joust and makes me go "Ahhh!" when I mess my minedrop or catch the minirazor.
And after a fight I lose I always ask the other player for 1 piece of advice on the topic: What would I have to change to have a bigger chance afterwards. I almost always get a positive answer and some useful advice. So I can look forward and try that out, the other player knows I'm having no hard feelings and OORPly things are fine.
