I'll join the FE love!
My first workout (a few months ago) was C1-S (Emily's) which I didn't care for at all, and was pretty worried I wouldn't like the rest of the set. But as it turns out that's the only workout I didn't like, I thought her C/S and C were great!
I have tried two of Rebekah's so far (S and C/S), two of Alison's (S and C/S) and I think two of Kelsie's (S and C/S), and LOVE the bonus workout with Jen. They are all just great workouts and I love getting in and out quickly! (Although I tend to take a couple extra minutes to stretch at the end).
I agree that Alison's is especially good due to her kettbell-style exercises, and Kelsie's is super fun with the kickboxing elements. I was dreading Rebekah's (the wooing) but actually it wasn't as bad as I was expecting. It seems like it would be really annoying on preview, but when you're working hard in the moment, it's not a big deal (IMO). Emily seems to rely more heavily on lunges than the other girls, probably making it my least favorite (tempermental knees) but I really do think her C/S and C were super fun. I really, really enjoy this set!
Add me to the list of people who have gotten mighty spoiled with the recent trend of SHORT workouts (no longer than 45 minutes) and now I rarely do anything longer than that
But still my endurance has improved because I really go all out with the shorter workouts and it keeps my appetite down.
Loving FE, Jillian's Body Rev, Kettlebell Kickboxing, and just caved on JNL...all short, intense workouts.