I had to use some Hershey's (my absolute favorite eating chocolate - forget the high-priced brands for me...I'm a cheap date
) to finish off a batch of 'berries. I thought it set up rather sticky to the touch. Plus, I had the same "sweating" problem sited by Mary Microwave. I've always used Merckens with great results. I melt them in the microwave on half-power, slowly reducing the time each time I take them out to stir. I had only one blown batch...forgot to check and they went all beach-sandy on me!
Didn't want to bother with mixing in oil to try and save that bowl. I now always
set the time for just the exact
time I want them spinning-not a second longer!