Personally i liked all the fallout games (except the two left out of your vote of course, we never count those). They all have something good to offer and excell over each other in different ways.
However its saddens me that fallout 3 gets a lot of unwarranted flak. I found a video that does a great job of reminding people whats so good about fallout 3, its abit long but if you didnt like fallout 3 before i went into this video with an open mind, it does a good job of turning opinions i think; https://youtu.be/5z8XHe2NoAE
I'm still voting for fallout 1 however. Last recent playthrough had be playing 18 hours straight.