Hmm...I had a love sachet work already to draw the exact guy I wanted right down to being vice president of a club (hey, I was in high school!) but the universe is funny sometimes and it wasn't the one I had in mind. Took about a year to work because I made it extremely narrow.
Had another love one work in about a week to bring a new guy to me because I needed someone to go out with. This time it was just a pink candle carved with my name and on the other side New Love above my picture and rosemary. Had one that weekend and had fun.
Backfire: My first and to date only money spell. Cast it in a waxing moon using a green candle above a quarter (in college, that meant I was rich). Within a week I ended up having people who I owed money to come out of everywhere. Ended up poorer than I started. Haven't done another one since because I have a feeling this time it might be even more expensive.