I have all the Buckingham Nicks era stuff, what now?

[diamondsnake]

I have been an obsessive fan for about a year and have collected pretty much all the stuff from the buckingham nicks era of the band. The only FM cds I don't have are Time and everything prior to the White Album. Where should I start, now that I want to branch out?

Keep in mind that I really love Christine Mcvie, so what albums is she really good on and has a lot of songs on?

Also, I really loved Behind the Mask. Is that album similar to Time at all?

Also, I am a little confused about some of the albums, like Mystery to Me. On that album, is it just Christine who is singing on it? Or were there other people doing lead vocals?

Also, has FM always had vocals on their albums or have they ever done instrumentals? I think that would be somewhat boring...

And I am also confused about what kind of sound FM had when it first started? Rock? Blues?

Any help on where to start would be great. My tastes revolve more around female singer, if that is any indication of what I might like.