I don't know about BigD, but I've gotten my best results with Transtint (which is what stewmac rebottles, marks up, and sells as Colortone from what I hear). They've vibrant, mix with water OR alcohol (important depending on the finish you put over it), available at Woodcraft stores for easy access.... the list of positives stacks up quickly.
Also, they're good, color-fast dyes
My $0.02,
Chris