I used Carb drops for the first time a few weeks ago and was kind of impressed with them, carb wise. I had bottled for NHC and still had some beer in the keg so I got to try the same beer side by side - I felt the drops added a bit of sweet/mouthfeel to the beer. The bittering hops on the draft version came through more. But that could have been user error somehow. Anyway, if I HAVE to carb again I'll use the drops over sugar just for ease of use.