I ordered sugar free xylitol peppermint candies from Dr. John's to make my favors with, I got a 5lb bag of candies (there are about 100 individually weapped hard candies per lb), and used 2" boxes to make my favors, I fit 10 candies per box, these had a great flavor to them and did not have the "sugar-free" taste of some other sugar free candies. I loved these candies and have purchased other flavors before and since.
These are great for make-your-own favours, the candy is a bit more expensive than candy with sugar, but not bad value for good quality, good tasting sugar-free candy.
I wanted sugar free candy for my favors as my groom and many family members are diabetic, and I wanted everyone to be able to enjoy the favors.