It would probably be bad form to post this on the Gaeilge forum as Béarla (as I don't have enough Irish yet) so I'll do it here.
If you had the option of visiting only one village in the Gaeltacht and the purpose of your stay was to speak in Irish with as wide a range of people as possible, which would you choose? In other words, a place where it's least likely that you'll to have to switch to English because the other person/people you're interacting with can't continue due to a lack of fluency. A place where you're most likely to hear young people speaking Irish amongst themselves in everyday life etc...
I've spent time in only one area which is undoubtedly in the Fíor-Ghaeltacht, and two places which have no business being in the Gaeltacht at all these days. Even to a non-Irish speaker like me, the difference was like night and day. In one, Irish was everywhere. In the grocery store, the petrol station, the mechanics shop, the pub and the school yard (kids chatting with their teacher).
In the others...nothing.