I have an X-Keys Pro (58 key), two X-Keys Desktops (20 key) and two foot pedals (3 keys each) to control my quintuplets. I experimented for a while and ended up finding the best configuration involved interfacing them with HKN. I use the 'UseKeyAsModifier' command to turn my F6 to F12 keys into key modifiers (similar to CTRL, ALT and SHIFT). I then section the X-Keys into groupings and assign each key to a function key and number (eg. F6 1, F6 2, F6 3 etc). Then I use HKN to convert these to key presses that each wow client will recognize.

I know this sounds complicated but I found this way avoided a lot of issues by minimizing modifier keys that wow will actually recognize. It also enables me to reuse alot of keys as they are processed for each client, rather then each client receiving every key press from the X-Keys (I may bind F6 1 to send key 1 to my primary account, and F6 2 to also send key 1 but only to my slave accounts). Basically this means less use of multiple modifier keys in wow which from experience I've found to be a good thing.

Oh, and I don't use an FTL setup, I use a hierarchical sticky targeting system that's mostly macro based.

- Aldercy