I really like to use the chrome module as it help me to get hashtag suggestions for images and texts directly on the page i am browsing. I use it along with Hootsuite which makes it great when it comes to write and schedule tweets and post.

Support is amazing. I've had personal calls with Saul the CEO. The best feature is the automation which pulls information in from RSS feeds and automates them into tweets WITH graphics / pictures. It's really incredible. You can automate 25 tweets in less than a minute and schedule to buffer once you've set it up. So you can smash twitter. Then you'll want to use the pinned post or tweet to feature your own content once you're getting lots of profile views. It has a call to action feature so that any link you share you can put a banner across that website with your call to action and a subscribe button.. it's insane

It helps you gauge which hashtags to use and which aren't worth it.