Buffer is a great tool for what it does. But that is not social media management, per se. Buffer is great for allowing me to curate and share lots of great content across multiple accounts and networks with some analytics.
I haven't used Sprout for a few years but liked its style and access to analytics. I've always struggled with HootSuite. It's just too fiddly and ugly.
I'm back using Tweetdeck for one client which I am liking and I'm happy with the native tools for Facebook.
For extensions, the Shareaholic Chrome extension helps me share content on other platforms including Buffer, Flipboard and Tumblr.
Analytics - All the tools have useful post action analytics but you are locked into their tools and will only really give you insights for the updates done through their system which puts you at a disadvantage if you want to move around.
www.bit.ly has always been a great resource for tracking click data, coupled with GA for 'results' whilst I rely on the native apps for measures of reach and engagement.
For Analytics I also had to mention my company. BirdSong provides on demand analytics for Twitter, Instagram and Facebook - any account any size. I am happy to share more about it elsewhere. www.birdsonganalytics.com