Proffessional hair colour like rhianna?

im a qualified hairdresser and use wella hair colours, but i think that wella dont have a wide range of "red" colours, so i was wondering what brands such as loreal, goldwell etc have the best range of red colours. at the moment i have bleached up my hair and put a wella red colour on top of it, its vibrant but more of a pink anyone have any good red colours?