At least you’re checking them out. I agree Floor Jansen is another outstanding vocalist, but you have to watch Tarja live, her stage presence is unbelievable.I listened to 'Once' and 'Wishmaster' and a newer one called 'Endless Forms'.....the style is a bit too 'metalish' for me at times but still accessible with melody and good vocals. I dont care for 'chugga chugga' guitar but was nice when the guitarist did regular chords and lead guitar.
Turunen seems to be a fan favorite and she has a really nice voice ,but I thought Jansen sounded more appropriate on Forms as she was able to belt it out when needed and sounds more like a rock singer in a prog metal band.. Some of the early 'operatic' vocals by Turunen (as good as they are) and background symph strings, etc...while lovely... sort of got in the way of the prog rock at times to my ears.
I 'm a fan of Christina Booth in Magenta and Haslam from Renaissance, as well as others both old and new.
I'm going to listen to the other newer ones by Nightwish.....Imaginaerum, HUman /Nature, and Yesterwynde to get a better picture.
I like Renaissance. Not too familiar, but have heard a song here and there. Very jazz influenced, if I’m not mistaken.
Next stick your feet into Kamelot. Try “ The Black Halo”
