There is no one-size-fits-all answer to this question, as the best social media analytics tool for your organization will depend on a number of factors, including your specific business goals and objectives, the type and volume of data you need to analyze, the level of sophistication of your analysis, and your budget.
That said, there are a few social media analytics tools that are generally well-regarded and widely used. These include Hootsuite Insights, Sprinklr, and Sysomos. All of these tools offer a free trial period, so you can try them out and see which one is the best fit for your needs.
In addition, there are a number of smaller, newer social media analytics tools that may be worth considering, depending on your needs. These include BuzzSumo, Mention, and SumAll.
Ultimately, the best social media analytics tool for you is the one that helps you achieve your specific business goals. So, take some time to think about what you need to accomplish, and then choose the tool that will best help you get there.