Usage-wise, Eon is more upgradeable for me. I have options in it that aren't in Zomg and I'd say use it if you can. The other has moved to more of a backup since non-Windows users can use it, but not Eon. Oh, and either will work with non-cgear. It's pretty simple.
Sadly, I can't tonight. I lent my AR to a friend so he could get his Pearl and Platinum files out of his corrupt cartridges and I'm not getting it till Monday. I'm really sorry. think we could do it then?