Yes it is. Without hesitation.
I chose "Other."
It's in my top three. And by top three, I mean I mostly play from three key series with some other games hiding in my stacks. I mostly play Mega Man (mostly Classic, X, and Legends), The Legend of Zelda, and Final Fantasy. At this point, I can't really decide which series I like best. Mega Man is there for when I want an action game, Zelda is my go-to adventure, and Final Fantasy is my RPG of choice.
Every now and then one series will try another genre. Mega Man had the Zelda-like Legends series while the Battle Network series and X: Command Mission are RPGs. Zelda... well, Adventure of Link had a leveling system, but that's about it. And Final Fantasy has action games and adventure games.
So really, I'm pretty set (and happy!) with all of these.
I want to say yes, but probably no. There are too many titles in FF that I'm not as enthusiastic about as my favourite few, really. It is a close second though.
Yeah, it is.
Bow before the mighty Javoo!
No, probably not, though I do enjoy most games in the series; if anything I'd guess the MM series is my favorite.