I'm having the same problem! Thanks for all the info.
Right now I started back to a salon and am in need of coloring again, BUT I don't like the Wella.
I used L'oreal on my hair for years but it is hard for me to do my own hair. I miss a lot. Then the grey comes back pretty quick.
I'm trying to decide what to do! The L'real colors are so beautiful in the sunshine and I noticed the Wella not so much. Very dull.
Ugh....