@Kui: Well, I'm not Christian, so I don't exactly have a favorite church.
I am religious, but since I belong to a minority religion, the "choice" is the one local-ish thing or rent a car and drive for well over an hour to the next available thing. Or do what I normally do and just do the rituals at home with family or maybe a few friends.
Denomination refers to the sub-type of religion you are. So for a Christian, that might mean Russian Orthodox or Baptist or Catholic or Methodist or Protestant or Episcopalian or Greek Orthodox or Mormon or whatever all else there is. I've picked up a fair bit over the years but it's not like I study this stuff.