Tableau

Tableau has a tool called Prep which is quite handy for data import from multiple sources be it excel, relational table, plain text. You can easily refine the data and further use it for analytics.

Selecting features during preparation of visual analytics is quite cumbersome. Also chart selection and fitting the data require so much of training.

Tableau allows for very good exploratory data analysis, and one can build amazing visualizations with it. Once you learn how to work with it, it becomes very easy to explore data and get insights from it.

Tableau is very expensive compared to its competitors, and if you want to get the whole company using it for dashboards, the pricing is certainly prohibitive for startups.
I also don't Tableau for Dashboards, as the discovery and navigation interface is not very inviting to business users and dashboards are hard do discover. At the same time, building dashboards on Tableau is a lot less straightforward than in other tools. One can build very advanced dashboards, but that requires a lot of time and expertise, which not all Data users in a company will be.

We really like the easiness to upload and prepare data visualizations, charts, graphics and dashboards. It works with the mains data files such as text crv, xls and google sheet documents. They have a free version which present the main functionalities, perfect for a small business, then if you need to upgrade to a paid version the process is very simple. Their forums and community really support, and help to improve, learn and develop great visualizations.

As any other solution, it takes some investigation and learning to understand the way it works and how to prepare robust presentations in Tableau. Some older versions do not allow roll back. Some sharing and analytic challenges are presented and really wish they develop additional features.

Ease to get started on our analytics journey is the key differentiator for me. Most of my users were able to learn how to do the dashboards relatively easily. The availability of the trial and the online trainings also complemented their learning journey.

Pricing. Tableau is expensive compared with available industry alternatives.