Be prepared to take some time learning the Spredfast features. There are quite a few bells and whistles, but Spredfast provides a large repository of learning resources - videos and instructions. Update: A new release occurred in October. While a slicker look, Spredfast has sacrificed much of its original UX simplicity in favor of UX design.
Spredfast is easy to use, and customer support responds within minutes. Also, they continue to upgrade the product, which means they're responding and reacting to customer needs and input and to the always changing landscape of social media.