ff:legend of crystals is based on ff5, or so I’ve heard. None of my friends like it, though, as much as they like final fantasy V. They thought it was okay, but it really doesn’t fulfill your anime needs. I haven’t watched it but I believe them. We all have similar taste, afterall.
Edit: For more information on ffunlimited just look at the thread titled "final fantasy unlimited".
The only way to get the episodes is to download them or to get fansubs somewhere, somehow.
But I don�t know much about where you should look for.
Since i’ve got both volumes (yes there are 2 volumes to Legend of the crystals) i know it’s not like FF5. It’s about this crystal that hides in this girls ass (prolly why it’s hard to find) and that’s the only way it can hide from the evil guys trying to find it. It’s got a lot of action and cool scenes. I like both volumes.