Be sure to have a strategy in mind when using Hootsuite. Their scheduling tool is very useful when trying to get an understanding of what you have planned. When you analyze Twitter I suggest you look at both your growth in following, but how people are engaging with what you post. I recently have begun scheduling Google+ posts through Hootsuite and find the quality is pretty good.
Hootsuite's performance in regards to Twitter is amazing. Every post takes seconds to create and schedule. However, in regards to other networking sites, the posts don't follow through as well as you would expect them to.