I just found out about this band yesterday as I stumbled upon their newest album in my Spotify recommendations. I am not entirely sure yet, but that record could easily make my top 10/top 5 of 2016 by the end of the year. Great stuff. (I am kinda sceptical towards their older releases though, looking at the 'nu metal' and 'metalcore' tags here on last.fm :p)
Candidce has more fluctuation with her voice because she has experience. Just cause a singer changes, that doesn't mean the band is doomed. I know almost half the line up is different, but give them time, and you will get the Eths sound you know and love. Rachel is by far the best replacement for Eths. It isn't No Candice, no Eths, or No Rachel, no eths. It's no eths, no eths. For God's sake, it's Rachel's first high-end metal band. Giver her afucking chance. I loved her for having the biggest balls for going on France's Got Talent and singing pure growls/scream vocals. So grow the fuck up, and if the change is so disarming, go listen to something else. We are here to enjoy this music.