Grand Companies

[ChameleonMS]

The gear difference between the GC is moot at best. The real only difference between one GC and the next is how many players are in the GC. From whatever the reason, Flames is the largest, and generally the most dominant in PvP.
I have levelled all 3 to maximum rank; and settled on Maelstrom, because, as Sida said. Your GC town becomes your de facto home town. I like the expediency of layout of Limsa.

[Erendis]

It costs a fair amount of company seals though

I costs about 50k gil, if I'm not wrong. And first transfer might be free, although I do not really remeber.