Favourite fo3 quest: wasteland survival guide probably even though I don't think I've ever done it
Hated fo3 quest: maybe the one we're you help the woman at rivet city seduce the priest-esque dude
Favourite NV quest: maybe Arizona Killer due to all the possible methods of offing Kimball
Hated NV quest: Bleed Me Dry or the one involving the guy at the strip Vault and the prostitute at Gomorrah. The boomer quest were you arrange to bring the young guy's crush is all right because there's options and the premise is kinda sweet.
Favourite FO4 quest: maybe Diamond City Blues because you can choose to kill the bartender and/or backstab the dude. The quest also has consequences down the line.
Hated FO4 quest: maybe Here Kitty Kitty? It's not terrible, just incredibly mediocre. Nearly all the side quests in 4 are pretty poor.