C.C.
I bought the cake pop maker from Kohls and the cake balls were too soft for my taste and yes there was a seam but frosting would cover that up. I prefer the traditional way because like you said, they are more dense and I think easier to handle. Also you can make them out of so many diff shapes doing it that way too. If you haven't already check out www.Bakerella.com and follow her recipes and techniques. I made some owl cake pops for my neighbor and they turned out really cute! Good luck!