Best gray coverage for resistant hair: Clairol Gray Busters, L'Oreal INOA Supreme?

[spankgo]

Best Gray Coverage for Resistant Gray Hair: Clairol Soy4plex NN Gray Busters, L'Oreal INOA Supreme, or Matrix Dream Age?

Ok, I want to hear from anyone who has tried at least 2 of these if not all. What's your experience? Which do you prefer? Which gives you the best gray coverage without pre-softening? I have a client with super resistant white+gray hair. What would give the best and most opaque color result? Especially in the blond ranges of 8 and 9...

Thanks for your comments in advance!

 

[spankgo]

Nobody?

 

[BD320]

Only have experience using INOA Supreme, wouldn't say this product worked well at all despite following all manufacturers instructions.

 

[spankgo]

Thanks for you insight BD320!