I have used Jazzing in the past and switched to Sebastian. I have used Sebastion Colourshines for the past 8 years.
I prefer the feel of my hair with the Colourshines, but I have learned to tell my girl not to apply the color to about the last inch of my nap. I use red-ality and when my hair is long the collars of my clothes always end up stained.
I've had really expensive wool suits ruined because the stain won't come out, not even with repeated dry-cleaning.