All Logitech game keyboards work under the same premise, they will run a background utility which let you program any sort of key binds to the G keys, key bindings could be single or multiple (like shortcuts) i.e. Cntrl+1, Cntrl+2, Cntrl+3, etc; to handle FFXIV macros.
But that's not all, those keyboards can also make their own macros for more complex activities (even able to insert delay between the key presses, or hold a key while activating others)
Additionally there is a powerful script language that let you even implement routines, with all sort of conditionals or cycles which actually for a MMORPG may even be borderline into the cheating area.
If you are thinking to purchase something specifically for MMORPG's, I feel G13 is the more flexible of them, since it's the one with most programmable keys, comes with a joystick and can be full operated with only your left hand.
Does the LCD screen apps thingy support FFXIV yet? I don't think it's listed on Logitech site, but the game is still fairly new.
Wing developed a tool for Logitech keyboards that you can find in this thread
, the only problem is that it displays leve reset time one hour ahead (Open Beta time) but I'm sure it will be eventually updated. Edited, Oct 27th 2010 7:49am by kenage