While it has been 9 1/2 years since my first daughter's wedding, we used bulkcandy.com and were really happy with them.
One other thing we did; I wanted to get the best deals I could so not all of it came from buying online, and I wanted to be sure everything was fresh. I called the candy companies that made what we wanted and their customer service reps were crazy helpful about how to read date codes on packages, how to store the candy (never ever ever ever put chocolate in the fridge or freezer....ever!), what the normal shelf life of the candy is, etc. I really suggest you do it!