I use it at about 3-5%, so the finished product isn't very dark, the finished product is about the same color as Black Jack at 10%. I haven't noticed too much of an impact on the lifespan of my coils. I am really picky about vanilla, and most things with artificial vanilla flavor I simply can't take. Holy Vanilla is more like real vanilla. It's real smooth, not overbearing at all.
Thanks Skunk..... appreciate the info. I sometimes laugh when I look at my vanilla "arsenal".... I don't even bother counting the bottles anymore. I've been searching for the perfect vanilla for a while now. I've added some oddball things to try and get just the right flavor I'm looking for and so far no cigar. I shall continue the search no matter how lonely the road or how dangerous.....