I think that at that moment the trinity is Preslava, Galena and Desi Slava. Emanuela, Anelia and Emilia have hits, too. Andrea is cool but her best years were 2009 and 2010. Also, last year she made the mistake to leave the main company Payner and it's just not the same now.
Desi Slava also left Payner in 2003 when she was number 1 and actually, she had big success for several years but in 2014 she realized how hard it is to be an artist without label and that's why she signed a new contract with them. They helped her to be TOP 3 again.
I like Gloria, too. She's actually the first solo female pop-folk singer ever. They call her 'The Queen'. Her new song is very good:
https://www.youtube.com/watch?v=iqtcI4YLQKA