Sorry, have to disagree here. The literature I have read and, through personal experience, suggests that the best method for giving the best results for the beer (not speed, simplicity, or any other possible motive) is to not use carbonation drops but to employ some other method of priming (preferably high quality dextrose).
The carbonation drops are great if you know of no other method for carbonating your bottles. I personally try and make the best beer I can and, when I do need to prime bottles instead of kegging, steer away from carbonation drops like the plague.