Thanks everyone. I will go ahead and buy the CD. Yes Conghaile or Conaola or Cionnfhaoliadh has a variety of spellings for the same name. You couldn't fire a stone on Inis Oirr without hitting a Conneely.
I take Ron Olesko's point about not comparing singers. But personally, I just can't help it!! Some (most) are in some ways inflenced by others - some more true, some traditional singers do themselves more justice without the electronic help of microphone etc. But I do appreciate all the comments.