Well, I like TFF best because it's one of the rare cases Maiden really surprised me. They tried something different. The album is experimental, but still pure Maiden. Dark moments, straight forwardness, everything. The attempts of something new starts with the cover already and closes with WTWWB. It's very unique. Plus The Talisman is IMHO the best reunion track.
AMOLAD is cool because of its dark atmosphere too, it's just enjoyable to listen from beginning to end, without needing to skip anything.
Dance Of Death is beautiful too and has great stuff like The Age Of Innocence, the title track and Paschendale...
TBOS is quite on an equal level to me along with DOD, but if I had to decide, and I had to do here, I'd prefer DOD a little over TBOS. But just a little really.
Senjutsu never really conviced me, but fair enough I must admit that Senjutsu crashed into the biggest ever personal transformation process of mine, it was a very, very difficult episode in my life ( = I stopped drinking over decades during the release period and got sucessfully sober and stayed sober until the present day - and will hopefully for the rest of my entire life too

, and I could manage it all with a 5 months professional help, so that's why Senjutsu will always be a very strange album for me - on a personal level - I guess.)
and... BNW sounds just boring to me.