Oh, totally go with Sword of Mana.
Oh, definitely go with Final Fantasy Adventure.
They're the same game. -_-
They both suck! Don't bother!
Well I wasn't sure! You might have meant to say the "Mana" series, or you might have been confused and thought Final Fantasy Legends had something to do with Final Fantasy Adventure! (Pro tip: Final Fantasy Legends is the SaGa series.)
I forgot I was going to respond to this before..
Caring for SwoM really depends on if you WANT to know the lore. If you're a fan of the gameplay and lore in the World of Mana series (SD4(Dawn of Mana), Heroes of Mana, Children of Mana) then you could EASILY love SwoM because the lore in the World of Mana series is HEAVILY based off the added information in SwoM.
Now, while I love the lore of the games, I personally feel that all World of Mana games put more emphasis on lore and story than they do on gameplay. I would probably perfectly fine watching a movie or even an anime (and I don't watch anime anymore) about the World of Mana that incorporates the lore from the games, but as for playing the games, it just turns me off because it'd rather tell me a very descriptive story (a good one still) than have me play an enjoyable game with fun gameplay.
Again, I like the lore and the stories, I just don't like when they're forced on me. Sometimes I wanna run around and fight things, not hear some kind of tale every place I go.
Granted, SD isn't the best on gameplay since.. well it's a mini-zelda game, but it's enough to make you like it and it lacks the massively indepth story. SwoM explains things that end up making more sense if you play other games, you don't really need to play other games to get SD, just as you don't need to play other games to get SD2 and SD3.
And mind you, when I say lore, I don't mean storyline. The storylines in the World of Mana series are SERIOUSLY over shadowed by the amount of info put into the game. You almost don't even want there to be a storyline, because it seems with every twist and turn, you get a million hours worth of information that doesn't effect the game (AKA the Lore). This is one reason I do like SD, SD2, SD3 with all my heart, it has lore (a much smaller amount) but it also has a storyline that isn't dulled out by over information.