Fo2>Fo1>Tactics of the original.
4>new Vegas>3>76 of the new ones.
My personal favorite, of all time was Fonline 2238. It was so short lived but was so amazing. All the players, fights, bases, raids, suicide runs, gosh it was a diamond.
Sorry not sorry, I have never liked bethesdas Fallout. Their engine since oblivion feels floaty and lifeless. It doesn’t suite fallout. Their world building is nice, their color scheme is awful, their story building is bad as well.