I'm totally in love with Moya Brennan's new album "Two Horizons." She changed the spelling of her name from Maire just for this album, probably in the hopes of getting a slightly larger fan base.
And just so you know how geeky of a Clannad fan I am, I have their first album (which includes Enya before she left for her solo career), Fuaim, on tape. It's entirely in Irish--even the sides on the tape are labeled in Irish.
I liked their old stuff . . . Newgrange, Theme from Harry's Game, Skellig, etc, but I really fell in love with them during "Anam" and "Banba."
But if you're looking for some good Clannad-ish stuff (especially since they haven't been doing much as a group lately except releasing box sets), get Maire's stuff. Perfect Time is a Celtic-Christian religious album, which has some good songs on it. I like Whisper to the Wild Water, and her first solo album is good. There are some really good songs on Misty-Eyed Adventures, but the first song begins with some really bad harmonies.
Anyway. There's my Clannad-Maire Brennan fandom digression for tonight. Remind me to play some of Two Horizons for you this weekend.