I own and love:
The entire Bold Brights Collection of Craft.
Also own:
Craft White, Vanilla, Black, Close to Cocoa, Barely Banana, Bliss Blue, Pretty in Pink, More Mustard, Old Olive, Baroque Burgundy. Love 'em all!
I intend to add: Chocolate Chip, Forest Foliage, Blush Blossom, Marvelous Magenta, and possibly Night of Navy.
I have found Bliss Blue (and all CRAFT pads in general) to have a much more intense color saturation than it's "dye" counterpart (and boy did it WOW the crowd at my workshop last night when I brought it for the project we did BY MISTAKE. Classic dye was intended. However, I will have to check to see if anybody ordered it. They sure did go NUTS over it, tho!
)
I was alarmed to hear your Vanilla was useless; mine works fabulously and I love the effect on darker AND lighter colored card stocks. You may have a defective one? However, if it's over 30 days since you received it, you may not have recourse in asking your demonstrator to get a replacement at SU!'s expense.
HTH,