Help choosing caster base range class ?

[ManuelBravo]

BLM does higher damage in dummy-perfect combat conditions, but minimally so, and the slightest bit of movement cancels that advantage. .

Not quite right as long as 80% of the spell is done BLM can move and still cast it off. I prefer BLM for the DMG out put. IF you you can balance taking risk and know patterns it can be fun and challenging. RDM I hear is fun for people who have little patience to stand still or don't like to move while casting. It has it's ups and down and from what I see the only draw back is some tend to be too flashy and jump into aoes or lack timing for it. Their great for a quick back up in the healing department , if they can handle a balance, yet over all I would stick with BLM. I love moving and sprinting as a BLM and can keep somewhat in par or survive more that the RDM's I've played with. Just keep your critical and spell speed up, have decent gear, and you should be fine.