Have you read Hush, hush por Becca Fitzpatrick? It's mais about fallen anjos then it is just anjos but it works right? Anyhoo it's really good, if you haven't read it you should give it a try. ^^
Hush hush por becca Fitzpatrick, halo por Alexandra adornetto, fallen por Lauren kate, a little bit of angel stuff is in city of bones (mortal instruments series) ok that's about it