FunkyCIA works for everything. GroovyCIA's cias will be exactly the same as FunkyCIA.
i'm not sure what you mean about edited for gw... the cias produced are not touched at all really, they are as pure and clean as we can have them.
if a game needs keys from the seed.db, that's a different problem
but the cia itself is fine...
if you are noobs like it seems you guys might be since you don't understand a lot of the stuff (no offense) - i recommend GroovyCIA, because my FunkyCIA (the original tool) is command line and needs python.