Hi Sarah. Just my two cents worth though I am not as deeply involved into Joni as others here and surely don't have the knowledge about her that some of them do.
For me, C and S and Blue are at the top of the list with FTR. Hard to say which is better, to me, as they have all touched me deeply in different ways. If pressed, I would have to give FTR the top spot though for it is incomparable. LOTC and Turbulent Indigo are in the next group for me. I find TI great driving music and love to listen to it while in the car. It has grown on me while I have had it and I seem to like it more each time I listen to it. Many don't care for Sex Kills, which I didn't the first few times I listened to it, but now I adore it. The rest of the albums (the ones I have and in this group I write about Hejira, THOSL, Clouds, and NRH) don't do much for me as albums. I have found tunes on each that I like but overall I consider them average to poor, Clouds included. Hasn't mattered how many times I have listened to it, it still bores me and I like Judy Collins version of Both Sides Now much more than Joni's. Hejira seems to be a favorite here although I don't get it. Do love Black Crow and Song for Sharon but can't find the appeal for Coyote and think Blue Motel Room is just dreadful. At the bottom of the heap is CMIAR. This is terrible, in my opinion, and not worth the money I spent on it. Most of it I can't even hear Joni, which is why I bought it in the first place. Apples and oranges but do get FTR, you cannot go wrong with it and it will forever be close to your heart. And: I haven't even heard DED. Have been tempted to buy it numerous times but the comments here have scared me away from doing so. Might get up the courage to spend that money one of these days. Also, haven't heard Mingus, DJRD, or TTT. Have some more listening to do and that is something to look forward to, if I can locate them. Mack